Question

1 – Exercícios :
a) 3x - 5 = 22

b) 6x + 2 = 44

c) 2x + 10 = 42

d) 8x – 4 = 60

e) 9x + 3 = 30

Me ajuda prfvvvvvvv

Answer 1

Resposta:

a) 3x = 22 + 5

  3x = 27

    x = 9

b) 6x + 2 = 44

6x = 44 - 2

6x = 42

x = 7

c) 2x + 10 = 42

2x = 42 - 10

2x = 32

x = 16

d)8x – 4 = 60

8x = 60 -4

8x = 56

x = 7

e) 9x + 3 = 30

9x = 30 - 3

9x = 27

x = 3

Answer 2

$a) 3x - 5 = 22 \implies3x = 27\implies x = \frac{27}{3} = 9 \\ \\ b) 6x + 2 = 44 \implies6x = 42\implies x = \frac{42}{6} = 7 \\ \\ c) 2x + 10 = 42 \implies2x = 32\implies x = \frac{32}{2} = 16 \\ \\ d) 8x – 4 = 60\implies8x = 56 \implies x = \frac{56}{8} = 7 \\ \\ e) 9x + 3 = 30\implies9x = 27\implies x = \frac{27}{9} = 3$