Question

1- a) 4x + 4 – 2 = 2x + 14

b) 15 + 4x =5x + 13

2- a) 20 + 3x = 5 + 6x

b) 3x + 15 = x + 45

Me ajudem pfvv

Answer 1

Resposta:

1 a) 4x + 4 - 2 = 2x + 14

4x - 2x = 14 - 4 + 2

2x =12

X = 12/2

x=6

b) 15 + 4x = 5x + 13

4x - 5x = 13 - 15

-1x = -2 .(-1)

x=2

2 a) 20 + 3x = 5 + 6x

3x - 6x = 5 - 20

-3x = -15

x = -15/-3

x = 5

b) 3x + 15 = x + 45

3x - x =45 - 15

2x = 30

x = 30/2

x=15