Question

Determine o valor de y na equação 3y + 23 – 5y = - 15 + y – 7

Answer 1

Resposta:

$3y+23-5y=-15+y-7\\3y-5y+23=-15+y-7\\-2y+23=-15+y-7\\-2y+23=y-22\\-2y=y-45\\\\y=\frac{45}{3} \\\\y=15$