Question

1- resolva as equações (com cálculos)
a) x+2= 12
b) x-4= -8
c) 4x-24= 0
d) 6+x= -2+18
e) 5x+2=2x-1

Answer 1

a) x + 2 = 12

x = 12 - 2

x = 10

b) x - 4 = - 8

x = - 8 + 4

x = - 4

c) 4x - 24 = 0

4x = 24

x = 24/4

x = 6

d) 6 + x = - 2 + 18

x = -2 + 18 - 6

x = 10

e) 5x + 2 = 2x - 1

5x - 2x = - 1 - 2

3x = - 3

x = 3/-3

x = -1

Espero ter ajudado.

Answer 2

Resposta:

A)×=12-2

x=10

B)×=-8+4

x=-4

C)4×=0-24

4x=-24

x=-24÷4

×=-6

D)×=-2+18-6

x=10

E)5x-2×=-1-2

3x=-3

x=-3÷3

×=-1