Question

resolva
a) 8x = 30 - 2x
b)9x - 8 = 37
c)8x - 11 = 4x + 13
d)3x + 5 + 2x + 6 = x + 27​

Answer 1

Resposta:

a) 3

b) 5

c) 6

d) 4

Explicação passo-a-passo:

a) 8x = 30 - 2x

8x + 2x = 30 - 2x + 2x Simplificando:

10x = 30

x = 30/10

x = 3

b) 9x - 8 = 37

9x - 8 + 8 = 37 + 8 Simplificando:

9x = 45

x = 45/9

x = 5

c) 8x - 11 = 4x + 13

8x - 11 + 11 = 4x + 13 + 11

8x = 4x + 24 Simplificando:

8x - 4x = 4x + 24 - 4x

4x = 24

x = 24/4

x = 6

d) 3x + 5 + 2x + 6 = x + 27

3x + 2x + 5 + 6 = x + 27

5x + 5 + 6 = x + 27

5x +11 = x + 27

5x + 11 - 11 = x + 27 - 11

5x = x + 16 Simplificando:

4x = 16

x = 16/4

x = 4