Question

o valor de x que satisfaz a equação x + 1/3 = 1 - x 2 é:

(A) -1
(B) 5
(C) 1/3
(D) 1/5

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Answer 1

Resposta:

( x+1)/3 = (1-x)/2

(2x+2=3-3x)/6

5x=3-2

5x=1

x=1/5