Question

a) 2× + 8 = 22

b) 5×- 1 = 39

d) 7y - 11 = 10
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Answer 1

Resposta:

a) x = 7

b) x = 8

c) y = 3

Explicação passo a passo:

a) 2x + 8 = 22

2x = 22 - 8

2x = 14

x = 14/2

x = 7

b) 5x - 1 = 39

5x = 39 + 1

5x = 40

x = 40/5

x = 8

c) 7y - 11 = 10

7y = 10 + 11

7y = 21

y = 21/7

y = 3