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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
$$3 ( x - 5 ) - 21$$
Evaluate
$3\left(x-12\right)$
Solution Steps
Use the distributive property to multiply $3$ by $x-5$.
$$3x-15-21$$
Subtract $21$ from $-15$ to get $-36$.
$$3x-36$$
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Expand
$3x-36$
Solution Steps
Use the distributive property to multiply $3$ by $x-5$.
$$3x-15-21$$
Subtract $21$ from $-15$ to get $-36$.
$$3x-36$$
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