Example

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

Question

$$(5x+7y)+(5x-7y)$$

Answer

10*x

Solution


Remove parentheses.
\[5x+7y+5x-7y\]
Collect like terms.
\[(5x+5x)+(7y-7y)\]
Simplify.
\[10x\]
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