Question

Descubra o número x. X+4 =12 X-5=19 X. 7=63 X sobre 6 =2

Answer 1

$x+4=12\\ x=12-4\\ \boxed{x=8}\\\\\\ x-5=19\\ x=19+5\\ \boxed{x=24}\\\\\\ x \times 7 = 63\\ x=\frac{63}{7}\\ \boxed{x=9}\\\\\\ \frac{x}{6} = 2\\ x=2 \times 6\\ \boxed{x=12}$

Bons estudos!