Question

Resolva as equações e ache o valor de x:

a) 3 + x = 15

b) 2x + 2 = 2 - 4x

c) 12 - 7 + 4x = 25

d) 5x - 3x = 30

e) 4x + 10 = 45 - 3x​

Answer 1

Resposta:

a) 3+ x =15

x= 15 - 3

x=12

b) 2x + 2 = 2 -4x

2x +4x = 2 - 2

6x= 0

x = 0+ 6

x= 6

c) 12 - 7 + 4x = 25

4x = 25 + 7

4x = 32

x = 32 + 4

x = 36

d) 5x - 3x = 30

2x = 30

x = 30 - 2

x = 28

e) 4x + 10= 45 - 3x

4x + 3x = 45 - 10

7x = 35

x = 35 - 7

x = 28