Question

como resolve essa quaçao 16x-6-7x=15+2x??

Answer 1

16x-6-7x=15+2x
16x-7x-2x=15+6
7x=21
  x=$\frac{21}{7}$=3

Answer 2

Isole o "x" :
16x-7x-2x=15+6
9x-2x=21
7x=21
x=21/3
x=7