Question

Resalva as equações da 1 grav 3×=×+1+7

Answer 1

$3x = x + 1 + 7 \\ \\ 3x - x = 1 + 7 \\ \\ 2x = 8 \\ \\ x = \frac{8}{2} \\ \\ x = 4$

Answer 2

3x = x+1+7

3x-x = 1+7

2x = 8

x = 8 ÷ 2

x = 4