Question

4)Resolva as equações
a) 3x - 4 = 2x + 2
b) 4x - 7 = 2x + 3
c) 2x - 3 = 17
d) x + 8 = - 2

Answer 1

Resposta:

a) 3x - 4 = 2x + 2

3x-2x= 2 +4

X=6

b)4x - 7 = 2x + 3

4x - 2x = 3 + 7

2x = 10

x= 10/2

x= 5

c) 2x - 3 = 17

2x= 17 + 3

2x=20

x=20/2

x= 10

d) x + 8 = - 2

x = -2 - 8

x= 10