Question

Preciso de ajuda urgente que poder me ajudar agradeço
1 e 2

Answer 1

Explicação passo-a-passo:

1.

A) 2x-17=19

2x=36

x=36/2

x=18

B) 73x+100=53x

73x-53x=-100

20x=-100

x=-100/20

x=-5

C)10(x+1)-5(x-2)=70

10x+10-5x+10=70

5x+20=70

5x=50

x=50/5

x=10

D) 3(x+1)-2(x-1)=-(x+5)

3x+3-2x+2=-x-5

x+1=-x-5

x+x=-5-1

2x=-6

x=-6/2

x=-3

E) 23x+2=2

23x=2-2

23x=0

x=0

F) 12-7+4x=25

5+4x=25

4x=25-5

4x=20

x=20/4

x=5

G) 5x-3x=30

2x=30

x=30/2

x=15

H) 4x+10=45-3x

4x+3x=45-10

7x=35

x=35/7

x=5

2.

A) 2x+28=x+18

2x-x=18-28

x=-10

B) 5x-3=2x+9

5x-2x=9+3

3x=12

x=12/3

x=4

C) 2x+3(x-5)=4x+9

2x+3x-15=4x+9

2x+3x-4x=9+15

x=24

D) 3x-26=x-2

3x-x=-2+26

2x=24

x=24/2

x=12