Question

A)5x + 18=33
B)7x - 24=3x +20
C)7x - 29=13
D) - 21 +45=3x +17
E) - 5x= - 9x +25
F)2x - 34=50
G)10 + 3(× + 1 )= 1
H)12 × - 7 - 3x =5x + 2(x + 1)
I) 2x - 5=7
J) 5(× - 1 ) =75​

Answer 1

Resposta:

Explicação passo-a-passo:

A) 5x + 18 = 33

5x = 15

x = 3.

B) 7x - 24 = 3x + 20

7x - 3x = 24 + 20

4x = 44

x = 11.

C) 7x - 29 = 13

 7x = 42

x = 6.

D) - 21 + 45 = 3x +17

24 = 3x +17

3x = 24 - 17

3x = 7

x = 7/3.

E) - 5x = - 9x + 25

- 5x + 9x = 25

4x = 25

x = 25/4.

F) 2x - 34 = 50

2x = 50 + 34

2x = 84

x = 42.

G) 10 + 3(x + 1 ) = 1

10 + 3x + 3 = 1

3x + 13 = 1

3x = 1 - 13

3x = - 12

x = - 4.

H) 12x - 7 - 3x = 5x + 2(x + 1)

9x - 7 = 5x + 2x + 2

9x - 7 = 7x + 2

9x - 7x = 7 + 2

2x = 9

x = 9/2.

I) 2x - 5 = 7

2x = 7 + 5

2x = 12

x = 6.

J) 5(x - 1 ) = 75​

5x - 5 = 75​

5x = 75​ + 5

5x = 80

x = 16.