Question

РЕШИТЕ УРАВНЕНИЯ А) 2(3-X)-(8+2); Б) -4(Y+5)+(12-Y); В) -(7-X)+4(X-5); Г) -9(Y-4)-(12+Y)

Answer 1

А)2(3-X)-(8+2)
6-2x-8-2
2x=-4
x=-4:2
x=-2

Answer 2

Б)-4(Y+5)+(12-Y)

Answer 3

-4y-20+12-y

Answer 4

-5y=-20

Answer 5

y=-20:(-5)

Answer 6

y=4

Answer 7

Решение во вложении :)