Question

3 3/11:18+100:25/36-5 1/6:1 1/30=? 49 это правильно?если нет,пожалуйста напишите решение!!!!!! 2)12 3/5:21/25-17/20:1,19+3 1/17:1 1/51

Answer 1

1) 3 3/11:18=36/11*1/18=2/11
    100:25/36=100*36/25=144
    5 1/6:1 1/30=31/6:31/30=31/6*30/31=5
    2/11+144-5=139целых2/11
2) 12 3/5:21/25=63/5*25/21=15
     17/20:1,19=17/20:119/100=17/20*100/119=5/7
     3 1/17:1 1/51=52/17:52/51=52/17*51/52=3
     15-5/7+3=18-5/7=17 7/7-5/7=17целых2/7

Answer 2

1. To solve the expression:

3 3/11:18+100:25/36-5 1/6:1 1/30

We can simplify the mixed numbers to improper fractions:

3 3/11 = 36/11 5 1/6 = 31/6 1 1/30 = 31/30

Then, we can perform the operations according to the order of operations (PEMDAS):

First, we need to perform any operations inside parentheses, but there are none in this case.

Next, we need to perform any multiplication or division, working from left to right.

18+100 = 118

25/36 ÷ 5 1/6 = 25/36 ÷ 31/6 = 25/36 × 6/31 = 5/31

Finally, we need to perform any addition or subtraction, also working from left to right.

36/11 - 5/31 + 31/30 = 10482/3415

So the answer is approximately 3.0695. Therefore, 49 is not correct.

2. To solve the expression:

12 3/5:21/25-17/20:1,19+3 1/17:1 1/51

We can simplify the mixed numbers to improper fractions:

12 3/5 = 63/5 1,19 = 1 19/100 3 1/17 = 52/17 1 1/51 = 52/51

Then, we can perform the operations according to the order of operations (PEMDAS):

First, we need to perform any operations inside parentheses, but there are none in this case.

Next, we need to perform any multiplication or division, working from left to right.

21/25 ÷ 17/20 = 21/25 × 20/17 = 84/85

Finally, we need to perform any addition or subtraction, also working from left to right.

63/5 - 84/85 - 1,19 + 52/17 - 52/51 = 25391/2550

So the answer is approximately 9.9608.