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4 votes
I just need one number to go in that green spot

I just need one number to go in that green spot-example-1
User Kadri
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1 Answer

4 votes

x-2-2x=-x+\text{?}

simplify expresion by common factors on left side


(x-2x)-2=-x+\text{?}

means that


-x-2=-x+\text{?}

the answer is that ? must be -2

User Bellabelle
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