Question

Resolva a equação
a- 2×+6=×+18
b- 5×-3=2×+9

Answer 1

a) 2x - x = 18 - 6
x = 12

b) 5x - 2x = 9 + 3
3x = 12
x = 12/3
x = 4

Answer 2

$a) \: 2x + 6 = x + 18 \\ 2x - x = 18 - 6 \\ \boxed{x = 12}$

$b) \: 5x - 3 = 2x + 9 \\ 5x - 2x = 9 + 3 \\ 3x = 12 \\ x = \frac{12}{3} \\ \boxed{x = 4}$