Question

me ajudeeeeemm pooor favooor​

Answer 1

Resposta:

Olá!

Explicação passo-a-passo:

a) $8x=5+3$

$8x=8$

$x=\frac{8}{8}$

$x=1$

b) $x-3=9$

$x=9+3$

$x=12$

c) $4x-9=1-2x$

$4x+2x=1+9$

$6x=10$

$x=\frac{10}{6} :2$

$x=\frac{5}{3}$

d) $x+5=20-4x$

$x+4x=20-5$

$5x=15$

$x=\frac{15}{5}$

$x=3$

e) $9x-4x+10=7x-30$

$9x-4x-7x=-30-10$

$-2x=-40.(-1)$

$2x=40$

$x=\frac{40}{2}$

$x=20$

f) $4x+2=16$

$4x=16-2$

$4x=14$

$x=\frac{14}{4} :2$

$x=\frac{7}{2}$

g) $4x+2=10$

$4x=10-2$

$4x=8$

$x=\frac{8}{4}$

$x=2$

h) $3x+12=27$

$3x=27-12$

$3x=15$

$x=\frac{15}{3}$

$x=5$

i) $4x+5-1=7x+8-x$

$4x-7x+x=8-5+1$

$-2x=4.(-1)$

$2x=-4$

$x=-\frac{4}{2}$

$x=-2$

Bons Estudos!