Question

A)2x + 8 = 40
B)5x+35=10x-25
C)9+3x=-27-6x
D)7x+18=5x+20+50
E)3x/2+1x/4=28
F)8x/3-4x/2=32
G)2x/5-9x/3=-6x/3+18
H)4x/4-8x/2=36+72
Obs: alguém mim ajuda por favor tem q ser hj

Answer 1

Resposta:

Explicação passo-a-passo:

A)2x + 8 = 40

2x=40-8

2x=32

x=32/2

x=16

S={16}

B)5x+35=10x-25

5x-10x=-35-25

-5x=-60

x=-60/-5=12

x=12

S={12}

C)9+3x=-27-6x

3x+6x=-27-9

9x=-36

x=-36/9

x=-4

S={-4}

D)7x+18=5x+20+50

7x -5x=70-18

2x=52

x=52/2

x=26

S={26}

E)3x/2+1x/4=28

7x/4=28

x=28*4/7

x=16

S={16}

F)8x/3-4x/2=32

4x/6=32

x=6*32/4

x=48

S={48}

G)2x/5-9x/3=-6x/3+18

-3x/5=18

x=5*18/-3

x=-30

S={-30}

H)4x/4-8x/2=36+72

x-4x=108

- 3x =108

x= 108/(-3)

x= - 36

S={ - 36}