Question

1 – Resolva as equações do 1 grau .

a) 2x – 18 = x + 28


b) 5x – 3 = 2x + 9


c) 7x + 4 = 3x + 20


d) 6x + 1 = 3x – 20

Answer 1

Resposta:

Olá!

Explicação passo-a-passo:

1. a) $2x-18=x+28$

$2x-x=28+18$

$x=46$

b) $5x-3=2x+9$

$5x-2x=9+3$

$3x=12$

$x=\frac{12}{3}$

$x=4$

c) $7x+4=3x+20$

$7x-3x=20-4$

$4x=16$

$x=\frac{16}{4}$

$x=4$

d) $6x+1=3x-20$

$6x-3x=-20-1$

$3x=-21$

$x=-\frac{21}{3}$

$x=-7$

Bons Estudos!