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whats -2y+3(4-y)=12-5y?

-2Y+(12-3Y)=12-5y
-5Y+12=12-5Y
0=0

i do not like reading but now i am sleepy all day and need help with my reading homework

as Maricela showed, the left side = right side.
So it is an identity and true for any value of y you choose.

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