Question

Calcule as equações:

Answer 1

A - 4x-9=15+4x
4x-4x=15+9
x= 24

B - 10X = - 145
x = - 145/10
x = -14,5

C - 7x-6 = 10
7x = 10-6
x = 4/7
x = 0,57142...