Question

Resolva as equaçoes

a)4x-1=3(x-1)
b)3(x-2)=2x-4
c)2(x-1)=3x+4
d)3(x-1)-7=15
e)7(x-4)=2x-3
f)3(x-2)=4(3-x)
g)3(3x-1)=2(3x+2)
h)7(x-2)=5(x+3)
i)3(2x-10)=-2(x+3)
j)5x-3(x+2)=15
k)2x+3x+9=8(6-x)

OBS:PRECISO DAS CONTAS

Answer 1

Resposta:

a)24

b 40

c 4

d 100

e 20

f 39

g 41

h61

i 50

j 30

k 12

Explicação passo a passo:

to com fome

Answer 2

Resposta:

Olá!

Explicação passo a passo:

a) $4x-1=3.(x-1)$

$4x-1=3x-3$

$4x-3x=-3+1$

$x=-2$

b) $3.(x-2)=2x-4$

$3x-6=2x-4$

$3x-2x=-4+6$

$x=2$

c) $2.(x-1)=3x+4$

$2x-2=3x+4$

$2x-3x=4+2$

$-x=6.(-1)$

$x=-6$

d) $3.(x-1)-7=15$

$3x-3-7=15$

$3x=15+3+7$

$3x=25$

$x=\frac{25}{3}$

e) $7.(x-4)=2x-3$

$7x-28=2x-3$

$7x-2x=-3+28$

$5x=25$

$x=\frac{25}{5}$

$x=5$

f) $3.(x-2)=4.(3-x)$

$3x-6=12-4x$

$3x+4x=12+6$

$7x=18$

$x=\frac{18}{7}$

g) $3.(3x-1)=2.(3x+2)$

$9x-3=6x+4$

$9x-6x=4+3$

$3x=7$

$x=\frac{7}{3}$

h) $7.(x-2)=5.(x+3)$

$7x-14=5x+15$

$7x-5x=15+14$

$2x=29$

$x=\frac{29}{2}$

i) $3.(2x-10)=-2.(x+3)$

$6x-30=-2x-6$

$6x+2x=-6+30$

$8x=24$

$x=\frac{24}{8}$

$x=3$

j) $5x-3.(x+2)=15$

$5x-3x-6=15$

$5x-3x=15+6$

$2x=21$

$x=\frac{21}{2}$

k) $2x+3x+9=8.(6-x)$

$2x+3x+9=48-8x$

$2x+3x+8x=48-9$

$13x=39$

$x=\frac{39}{13}$

$x=3$

Bons Estudos!