Question

A)5x+12=8x-39 B)11x+3=5x-9

Answer 1

Resposta:

a) x = 17

b) x = -2

Explicação passo-a-passo:

a) 5x + 12 = 8x - 39 ; isola as letras dos números:

5x - 8x = - 39 - 12 ;

-3x = - 51 ; .  ( -1 )

x = 51/3

x = 17

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b) 11x + 3 = 5x - 9 ;

11x - 5x = -9 - 3

6x = -12

x = -12/6

x = -2

Answer 2

A) 5x+12=8x-39

5x-8x=-12-39

-3x=-51

X= -51/-3= 17

B)11x+3=5x-9

11x-5x=-3-9

6x=-12

X= -12/6= -2