Question

РЕШИТЕ УРАВНЕНИЕ СРОЧНО!
-4 * (3 - 5z) = 18z -7

Answer 1

-4 * (3 - 5z) = 18z -7
-12+20z=18z-7
20z-18z=12-7
2z=5
z=2,5

Answer 2

-12+20z=18z-7
20z-18z=12-7
2z=5
z=2.5