x+5+2x-7 Algebra

i dont know the answer any ideas people please? I do not get algebra..
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1 Answer

X+5+2X-7=0

(X+2X) + (5-7) =0

(3X) + (-3) = 0

3X -3 +(3) = 0 + (3)

3x = 3

3X x (1/3) = 3 x (1/3)

X = 1
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