Question

3×+9=30
Alguém me ajuda?​

Answer 1

Resposta:

Oi!

3x + 9 = 30

3x = 30 - 9

3x = 21

x = 21/3

x = 7

Answer 2

$> resolucao \\ \\ \geqslant equacao \: do \: 1 \: grau \\ \\ 3x + 9 = 30 \\ \\ 3x = 30 - 9 \\ \\ 3x = 21 \\ \\ x = \frac{21}{3} \\ \\ x = 7 \\ \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \geqslant$