Question

Resolva as questões abaixo:
A) 3X+15 igual X+45
B)5X+2 igual 2X-1
C) 2X + 18 igual 56
D)4X-50 igual 2X+30

Answer 1

Ola Steffan

A)

3x + 15 = x + 45

2x = 45 - 15 = 30

x = 15

B)

5x + 2 = 2x - 1

5x - 2x = -1 - 2

3x = -3

x = -1

C)

2x + 18 = 56

2x = 56 - 18 = 38 

x = 19

D)

4x - 50 = 2x + 30

4x - 2x = 30 + 50

2x = 80

x = 40

.

Answer 2

A) 3x+15=X+45
3x-x=45-15
2x=30
X=30/2
X=30

B) 5x+2=2x-1
5x-2x= -1 -2
3x= -3
X= -3/3
X= -1

C) 2x+18=56
2x= 56-18
2x= 38
X= 38/2
X= 19

D) 4x-50=2x+30
4x-2x = 30+50
2x= 80
X= 80/2
X= 40