Question

Resolva as equações:

a) 20x-4=5x

b) 4x=-8x+36

c) 6x-4=2x+8

d) 4x-10=2x+2

Answer 1

A)20x-4=5x
20x-5x-4=0
20x-5x=4
15x=4
x=4/15

B)4x=-8x+36
4×+8x=36
12x=36
x=36/12
x=3

C)6x-4=2x+8
6x-2x=8-4
4x=4
x=4/4
x=1

D)4x-10=2x+2
4x-2x=2+10
2x=12
x=12/2
x=6

Answer 2

 Olá! :)


A) 20 x - 4 = 5 x

20 x - 5 x - 4 = 0

20 x - 5 x = 4

15 x = 4

x = 4 / 15

B) 4 x = - 8 x + 36

4 × + 8 x = 36

12 x = 36

x = 36 / 12

x = 3

C) 6 x - 4 = 2 x + 8

6 x - 2 x = 8 - 4

4 x = 4

x = 4 / 4

x = 1

D) 4 x - 10 = 2 x + 2

4 x - 2 x = 2 + 10

2 x = 12

x = 12 / 2

x = 6


 Abraços! :)