Question

resolva a equação (12+2×)=50

Answer 1

$12+2x=50$

$2x=50-12$

$2x=38$

$x=\dfrac{38}{2}$

$\boxed{x=19}$

$\text{S}=\{19\}$

Answer 2

(12+2x)=50
2x=50-12
2x=38
x=38/2
x=19
   
Resposta: 19