Question

Resolva as equações do 1° grau.

Answer 1

Resposta:

$a)6x - 4x = 85 + 25 \\ 2x = 110 \\ x = \frac{110}{2} \\ x = 55$

$b)5x + 5 = 20 \\ 5x = 20 - 5 \\ 5x = 15 \\ x = \frac{15}{5} \\ x = 3$

$c)3x - x = 17 - 12 \\ 2x = 5 \\ x = \frac{5}{2}$

$d)3x - 30 = 2x - 8 \\ 3x - 2x = - 8 + 30 \\ x = + 22$