Question

resolva as equaçoes: a)16x-52 =4x-4 b)7(x-6)=21

Answer 1

A) 16x-52=4x-4
16x-4x=-4+52
12x=48
x=$\frac{48}{12}$
x=4

B)7x-42=21
7x=+42+21
7x=63
x=$\frac{63}{7}$
x=9