Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$x-y+x-y$$

Answer

2*x-2*y

Solution


Collect like terms.
\[(x+x)+(-y-y)\]
Simplify.
\[2x-2y\]
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