Question

5°) Resolva as equações abaixo:
a ) 5x - 8 = 35
b) 8x = 40
c) 4x - 21 = 15
d) a + 8 = 38​

Answer 1

Resposta:

a) x = 43/5

b) x = 5

c) x = 9

d) a = 30

Explicação passo-a-passo:

a) 5x - 8 = 35

5x= 35 +8

5x = 43

x = 43/5

b) 8x = 40

x = 40/8

x = 5

c) 4x - 21 = 15

4x = 15 +21

4x = 36

x = 36/4

x = 9

d) a + 8 = 38​

a = 38 - 8

a = 30

Answer 2

a ) 5x - 8 = 35

- 8 - 35 = 5x

- 43 = 5x

5x = 43

x = 43/5

b) 8x = 40

x = 40/8

x = 5

c) 4x - 21 = 15

4x = 15 + 21

4x = 36

x = 36/4

x = 9

d) a + 8 = 38

a = 38 - 8

a = 30