Question

1/7 de x + 2x - x/2 =23

Answer 1

fazendo mmc(7,2) = 14, temos:
2.1/14x +14.2x/14-7.x/14= 23.14
2x/14+28x/14-7x/14 = 322/14
2x+28x-7x=322
30x-7x= 322
23x = 322
x = 322/23
x = 14