Question

resolva as equações ×+10=25
2×+8=0

Answer 1

A)
$x + 10 = 25 \\ x = 25 - 10 \\ x = 15$
B)
$2x + 8 = 0 \\ 2x = - 8 \\ x = \frac{ - 8}{2} \\ x = - 4$