Question

02) Resolva as equações seguintes:

a) x – 7 = 0

b) x + 9 = 0

c) x – 3/8 = 0

d) x + 1 = 0

e) x – 10 = 3

f) 4x – 7 = x + 8

g) 7x + 30 = 10x

h) 3x -1 = 11 + 2x​

Answer 1

Resposta:

a) x – 7 = 0

x=7

b) x + 9 = 0

x= -9

c) x – 3/8 = 0

x=3/8

d) x + 1 = 0

x= -1

e) x – 10 = 3

x= 3+10= 13

f) 4x – 7 = x + 8

4x-x=8+7

3x=15

x=15/3

x=5

g) 7x + 30 = 10x

7x-10x=-30

-3x=-30

x=10

h) 3x -1 = 11 + 2x​

3x-2x=11+1

x=12

Explicação: