Question

Resolva as questões de 1°grau:

A) 6x= 2x+16=

B) 5x+4= 3x-2x+4=

C) 7x-21= 45+4x=

D) 3x-5= x+1=

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Answer 1

Oi...

a)

6x = 2x + 16

6x - 2x = 16

4x = 16

x = 16/4

x = 4

b)

5x + 4 = 3x - 2x + 4

5x + 4 = x + 4

5x - x = 4 - 4

4x = 0

x = 0/4

x = 0

c)

7x - 21 = 45 + 4x

7x - 4x = 45 + 21

3x = 66

x = 66/3

x = 22

d)

3x - 5 = x + 1

3x - x = 1 + 5

2x = 6

x = 6/2

x = 3

Espero ter ajudado.