Question

calcule a raiz das equaçoes: a)x-10=8 b)x+3x=10

Answer 1

a)
$x - 10 = 8 \\ x = 8 + 10 \\ x = 18$
b)
$x + 3x = 10 \\ 4x = 10 \\ x = \frac{10}{4} simplificando \: fica \\ x = \frac{5}{2}$