Question

Resolva as equações do 1º Grau:

a) 2x + 6 = 0 f) 8x + 3 = 2x – 9

b) 3x + 5 = 11 g) 10x – 4 = 6x + 8

c) 10x – 4 = 16 h) 5x – 4 = 3x + 8

d) 2x – 7 = - 5 i) 3x = - 12

e) 4x = 16 j) 2x = - 10​

Answer 1

Resposta:

Olá!

Explicação passo-a-passo:

a) $2x+6=0$

$2x=-6$

$x=-\frac{6}{2}$

$x=-3$

b) $3x+5=11$

$3x=11-5$

$3x=6$

$x=\frac{6}{3}$

$x=2$

c) $10x-4=16$

$10x=16+4$

$10x=20$

$x=\frac{20}{10}$

$x=2$

d) $2x-7=-5$

$2x=-5+7$

$2x=2$

$x=\frac{2}{2}$

$x=1$

e) $4x=16$

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

$x=4$

f) $8x+3=2x-9$

$8x-2x=-9-3$

$6x=-12$

$x=-\frac{12}{6}$

$x=-2$

g) $10x-4=6x+8$

$10x-6x=8+4$

$4x=12$

$x=\frac{12}{4}$

$x=3$

h) $5x-4=3x+8$

$5x-3x=8+4$

$2x=12$

$x=\frac{12}{2}$

$x=6$

f) $2x=-10$

$x=-\frac{10}{2}$

$x=-5$

Bons Estudos!