Question

Calcule Mentalmente O Valor De X ​

Answer 1

$\frac{x - 5}{7} = 1 \\ x - 5 = 1 \times 7 \\ x - 5 = 7 \\ x = 7 + 5 \\ x = 12$

Answer 2

x - 5 = 7 . 1
x = 7+5
x = 12