Example

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

Question

$$(10y+1)+(10y-1)$$

Answer

20*y

Solution


Remove parentheses.
\[10y+1+10y-1\]
Collect like terms.
\[(10y+10y)+(1-1)\]
Simplify.
\[20y\]
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