Question

Решите уравнение:
а)-6(x+2)=4x-17
б)(18x-19)-(4-7x)=73
в)10x+3(7-2x)=13+2x
г)-3(4-5y)+2(3-6y)=-39​

Answer 1

Ответ:

Пошаговое объяснение:

а)-6(x+2)=4x-17

-6x - 12 = 4x - 17

4x + 6x = 17 - 12

10x = 5

x = 5:10

x = 0,5

б)(18x-19)-(4-7x)=73

18x - 19 - 4 + 7x = 73

25x - 23 = 73

25x = 73 + 23

25x = 96

x = 96:25

x = 3,84

в)10x+3(7-2x)=13+2x

10x + 21 - 6x = 13 + 2x

4x + 21 = 13 + 2x

4x - 2x = 13 - 21

2x = -8

x = -8 : 2

x = -4

г)-3(4-5y)+2(3-6y)=-39​

-12 + 15y + 6 - 12y = -39

-6 + 3y = -39

3y = -39 + 6

3y = -33

y = -33:3

y = -11