Question

A) 5x-20=4
B)7x=35
C)3x-27=30

Answer 1

A) 5x -20 = 4
     5x = 4 +20
     5x = 24
       x = 24/5

 
B) 7x = 35
       x = 35/7
       x = 5


C) 3x -27 = 30
     3x = 30 + 27
     3x = 57
       x = 57/3
       x = 19

Answer 2

Boa noite

a)

5x - 20 = 4

5x = 4 + 20

5x = 24

x = 24 / 5

x = 4,8

b)

7x = 35

x = 35 / 7

x = 5

c)

3x - 27 = 30

3x = 30 + 27

3x = 57

x = 57 / 3

x = 19