Question

1 determine o valor de X

a) X + 7 =25 - X

b) 3x - 10 = 30 - x

c) 7x + 5 - 7 = 13 + 4x

d) 3x + 8 = 20 + 2x

e) 2x + 12 = 10

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Answer 1

Resposta:

A) X=9

B) X=10

C) X=5

D) X= 12

E) X= -1