Question

calcule os equaços
e) 2x + 3+x+7=18​

Answer 1

→ Cálculo :

$\\{{\boxed{\begin{array}{lr} {2x+3+x+7=18} \\ \\ {3x+3+7=18}\\\\{3x+10=18}\\ \\{3x=18-10}\\ \\{3x=8}\\ \\ \boxed{\red{x=\frac{8}{3} }} \end{array}}}}$