Question

36. 4x + 10(x + 4) = 6(10 - x) + 2x - 2;=
37. 18 + 13(b - 5) + 17 = 4b + 5(6-b) + 10=​

Answer 1

1)

4x + 10(x + 4) = 6(10 - x) + 2x - 2

4x + 10x + 40 = 60 - 6x + 2x - 2

14x + 40 = 58 - 4x

14x + 4x = 58 - 40

18x = 18

x = 1

Ответ: 1.

2)

18 + 13(b - 5) + 17 = 4b + 5(6-b) + 10

18 + 13b - 65 + 17 = 4b + 30 - 5b + 10

13b - 30 = -b + 40

13b + b = 40 + 30

14b = 70

b = 5

Ответ: 5.