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Basic Math
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Example
3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b
Question
$$3(7+5b)-13b$$
Evaluate
$2b+21$
Solution Steps
Use the distributive property to multiply $3$ by $7+5b$.
$$21+15b-13b$$
Combine $15b$ and $-13b$ to get $2b$.
$$21+2b$$
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Expand
$2b+21$
Solution Steps
Use the distributive property to multiply $3$ by $7+5b$.
$$21+15b-13b$$
Combine $15b$ and $-13b$ to get $2b$.
$$21+2b$$
Show Solution
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