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OpenStudy (anonymous):
Simplify expression (3x+y)-(2x+y)
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OpenStudy (karatechopper):
tht minus sign...will change all of the stuff in the second parenthesis. if u rewrite without parenthesis u get 3x+y-2x-y then u combine like terms.. 3x-2x+y-y x-0 =x
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