Question

Упростите выражения (12.14-12.10): 12.14.1) (a' - a+6)-(40+8- 11); 2) (11x + 21x) - 43) + (60 - 19x" -- 7x"); 3) (3065-15b + 16) - (17 + 17b + 440"); 4) (-73 +17x + 19x®) + (-18x" - 39x + 50). 12.15, 1) (5a - 4x + 25) + (-31 + 9aº -- 3x); 2) (17y + 862 - 11) - (70 - 95% + 18y); 3) (2,3c-9,128 - 4) - (1028 - 30 + 5,9); 4) (0,8t2 - 20m + 5) - (41 - 3m - 2,4t'^2).​

Answer 1

1) 4а + 36а – 8а + 3а = (4 + 36 – 8 + 3) • а = 35а, если а = 6, 35а = 210

2) 52b – 7b – 6b + b = (52 – 7 – 6 + 1) • b = 40b, если b = 25, 40b = 1000

3) 14 m + m + 17m – 9m = (14 + 1 + 17 - 9) • m = 3m, если m = 30, 23m = 690

4) 31n + 5n – n + 19n = (31 + 5 -1 + 19)n = 54n, если n = 20, 54n = 1080

5) 2x + 6 + 9x + 8 + x = (2 + 9 + 1)x + 14 = 12x + 14, если x = 4, 12x + 14 = 62

6) 15 + 3у + у + 4 + 5у = (3 + 1 + 5)у + 19 = 9у + 19, если у =7, 9у + 19 = 82

Уц. Уточняйте, какой класс, я учусь в 9,и то еле ваш енихуанский расшифровала

Answer 2

1) (12.14-12.10): = 0.04

2) (a'+- a+6)-(40+8-+11): = (1-a+6)-(59) = 1-a+6-59 = -a-52

3) (11x+++21x)-43)+++(60+-+19x"+--+7x"): = 32x-43+60-19x-7x = 32x-19x-7x-43+60 = 6x+17

4) (3065-15b+++16)- (17+++17b+++440"): = 3065-15b+16-17-17b-440 = 3065-17-15b-17b+16-440 = 2604-32b

5) (5a+-4x+++25)-(-31+++9aº+--+3x): = 5a-4x+25+31-9a+3x = 5a-9a-4x+3x+25+31 = -4a-x+56

6) (17y+++862+-11)- (70+-95%+++18y): = 17y+862-11-70-95+18y = 35y+757

7) (2.3c-9.128+-4)- (1028+-30+++5.9): = 2.3c-9.128-4-1028-30-5.9 = 2.3c-9.128-4-1028-30-5.9 = 2.3c-9.128-4-1028-30-5.9

8) (0.8t^2+-20m+++5)- (41+-3m+-2.4t'^2): = 0.8t^2-20m+5-41+3m+2.4t^2 = 0.8t^2+2.4t^2-20m+3m+5-41 = 3.2t^2-17m-36