Question

a) 3x+1 + 3x+1 = 12

Answer 1

Resposta:

x= $\frac{10}{6}$ = $\frac{5}{3}$

Explicação passo a passo:

3x+1 + 3x+1 = 12

(=) 6x +2 = 12 (=)

(=) 6x = 12-2 (=)

(=) 6x=10 (=)

(=) x= $\frac{10}{6}$ = $\frac{5}{3}$