Question

СРОЧНО!СРОЧНО ПОМОГИТЕ!РЕШИТЬ ДРОБИ ! 1)8/28*9/7:4/7= 2)2/ 2 /3:24/35:2/ 7 /9= 3)11/12:7/24:2/ 2 /21= 4)13/ 1 / 2 *1/ 1 /2:2/ 1 /4= 5)15/16:5/8*1/ 1 /9= 6)13/14:1/ 4 /21:13/5= 7)4/ 9 38/* 5/23 :7/19= 8)2/ 16 /19* 2/ 1 /9: 3/ 3 /8 = ПО ДЕЙСТВИЯМ УМОЛЯЮ ПОМОГИТЕ!!!!!!!!!!!!!!!!!

Answer 1

3)11/12:7/24:2/ 2 /21

когда деление дробей, то дробь (на которую делим) переворачиваем и дроби при этом умножаются... смотри:
Т.е. 11/12:7/24=11/12×24/7=22/7

дальше смотри: 2 2/21 приводим в общую дробь
22/7:2 2/21=22/7×21/44=
3/2= 1 1/2

Answer 2

1) 8/28 * 9/7 : 4/7 First, simplify the expression inside the brackets: 8/28 * 9/7 = 72/196 Then, divide by 4/7 by multiplying by its reciprocal: 72/196 * 7/4 = 504/784 Simplifying the answer, we get: 504/784 = 63/98

2) 2/2 + 3/24 : 35/2 + 7/9 First, simplify the expression inside the brackets: 3/24 : 35/2 = 3/24 * 2/35 = 6/840 = 1/140 Then, add 2/2 and 7/9: 2/2 + 1/140 + 7/9 = 1 + 1/140 + 7/9 To add these fractions, find the common denominator: Common denominator: 9 * 140 = 1260 1 = 1260/1260 1/140 = 9/1260 7/9 = 140/180 Adding them together: 1260/1260 + 9/1260 + 140/180 = 1409/1260 = 29/26

3) 11/12 : 7/24 : 2/2 + 2/21 First, simplify the expression inside the brackets: 11/12 : 7/24 = 11/12 * 24/7 = 264/84 = 22/7 Then, add 2/2 and 2/21: 2/2 + 2/21 = 1 + 2/21 To add these fractions, find the common denominator: Common denominator: 1 * 21 = 21 1 = 21/21 2/21 = 2/21 Adding them together: 21/21 + 2/21 = 23/21

4) 13/1 + 2 * 1/1 + 2/2 : 1/4 First, simplify the expression inside the brackets: 2/2 : 1/4 = 2/2 * 4/1 = 8/2 = 4 Then, multiply 2 by 1/1: 2 * 1/1 = 2/1 = 2 Then, add 13/1, 2, and 4: 13/1 + 2 + 4 = 13 + 2 + 4 = 19 + 4 = 23

5) 15/16 : 5/8 * 1 + 1/9 First, simplify the expression inside the brackets: 15/16 : 5/8 = 15/16 * 8/5 = 120/80 = 3/2 Then, multiply 3/2 by 1: 3/2 * 1 = 3/2 Then, add 3/2 and 1/9: 3/2 + 1/9 To add these fractions, find the common denominator: Common denominator: 2 * 9 = 18 3/2 = 27/18 1/9 = 2/18 Adding them together: 27/18 + 2/18 = 29/18

6) 13/14 : 1 + 4/21 : 13/5 First, simplify the expression inside the brackets: 4/21 : 13/5 = 4/21 * 5/13 = 20/273 Then, divide 13/14 by 1: 13/14 / 1 = 13/14 Then, add 13/14 and 20/273: 13/14 + 20/273 To add these fractions, find the common denominator: Common denominator: 14 * 273 = 3822 13/14 = 286/3822 20/273 = 280/3822 Adding them together: 286/3822 + 280/3822 = 566/3822

7) 4 + 9 * 38 + 5/23 + 7/19 First, multiply 9 by 38: 9 * 38 = 342 Then, add 4, 342, 5/23, and 7/19: 4 + 342 + 5/23 + 7/19 To add these fractions, find the common denominator: Common denominator: 23 * 19 = 437 5/23 = 95/437 7/19 = 161/437 Adding them together: 4 + 342 + 95/437 + 161/437 Adding the whole numbers: 4 + 342 = 346 Adding the fractions: 346 + 95/437 + 161/437 = (346 * 437 + 95 + 161) / 437 = 150533 / 437

8) 2 + 16 * 19 + 2 * 1 + 9 + 3 + 3/8 First, multiply 16 by 19: 16 * 19 = 304 Then, multiply 2 by 1: 2 * 1 = 2 Then, add 2, 304, 9, 3, and 3/8: 2 + 304 + 9 + 3 + 3/8 To add the whole numbers: 2 + 304 + 9 + 3 = 318 Adding the fractions: 318 + 3/8 To add fractions, find the common denominator: Common denominator: 8 3/8 = 3/8 Adding them together: 318 + 3/8 = (318 * 8 + 3) / 8 = 2547 / 8

I hope this helps! Let me know if you have any further questions.

Answer 3

1) 8/28 * 9/7 : 4/7 = (8/28) * (9/7) * (7/4) = 1/1 = 1

2) 2/(-2)/3 : 24/35 : 2/7/9 = (2/(-2)/3) * (35/24) * (9/7) = -1/4

3) 11/12 : 7/24 : 2/2/21 = (11/12) * (24/7) * (21/2) = 77/8

4) 13/(1/2) * 1/(1/4) = 13 * 2 * 4 = 104

5) 15/16 : (5/8 * 1/1) : 1/9 = (15/16) : (5/8) * (9/1) = (15/16) * (8/5) * (9/1) = 108/16 = 27/4

6) 13/14 : 1/(4/21) : 13/5 = (13/14) * (21/4) * (5/13) = 105/4

7) 4/(9+38) * (5/23) + 7/19 = (4/47) * (5/23) + 7/19 = 20/1081 + 49/1081 = 69/1081

8) 2/(16+19) * (2/1) * 9/(3/8) + 3/(8/3) = (2/35) * (2/1) * (72/1) + (3/8) * (3/8) = 4/35 * 72 + 9/64 = 288/35 + 9/64 = (8192 + 315)/2240 = 8507/2240

Я надеюсь, что эти ответы помогут вам. Если у вас есть еще вопросы, не стесняйтесь задавать!