Question

решите уравнение 7(4-3x)-(8.5-x )=4-3(x-8)

Answer 1

7(4-3x)-(8.5-x )=4-3(x-8);

28 - 21x - 8.5 + x = 4 - 3x + 24;

-21x + x + 3x = 4 + 24 - 28 + 8.5;

-17x = 8.5;

x = -0.5;