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-y + 2y = what ? Please help and why is it negative or positive ?

User Ashley O
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8 votes

Explanation:

-y is the same as writing -1y. if we forget about the y’s, -1 + 2 = 1. so -1y + 2y = 1y, or just y to be simpler :)

i hope this helps :)

User Sinkeat
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-y+2y=2y-y=(2-1)y=y

It is positive because the coefficient is positive.

User Justin Ludwig
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