Question

7. Encontre o valor de x em: a) 2x = 8 b) -5x + 10 = 15 c) x-2x = - 12 d) 4x + x - 6x = -31 e) x (2 + 17 - 13) = ) 8 + 3x = 4x - 41
TROPA AJUDA POR FAVOR​

Answer 1

Resposta:

a) 2x = 8

x = 4

b) -5x + 10 = 15

-5x = 5 .(-1)

5x = -5

x = -1

c) x - 2x = -12

-x = -12 .(-1)

x = 12

d) 4x + x - 6x = -31

-x = -31 .(-1)

x = 31

e) x (2 + 17 - 13)

x = 0

f) 8 + 3x = 4x - 41

-x = -49 . (-1)

x = 49