Question

С.
calcule
a
equação
) 2x + 5+X+ 7 = 18​

Answer 1

2x + 5 + x +7 = 18

2x + x = 18 -5 - 7

3x = 6

x=6/3

x=2

Answer 2

→ Cálculo :

$\\{{\boxed{\begin{array}{lr} {2x+5+x+7=18} \\ \\ {3x+5+7=18}\\\\{3x+12=18}\\ \\ {3x=18-12}\\\\{3x=6}\\\\{x=\frac{6}{3} }\\\\\boxed{\red{x=2}} \end{array}}}}$