Example

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

Question

$$3(2x+5)-2(4+4x)=7$$

Answer

x=0

Solution


Expand.
\[6x+15-8-8x=7\]
Simplify  \(6x+15-8-8x\)  to  \(-2x+7\).
\[-2x+7=7\]
Cancel \(7\) on both sides.
\[-2x=0\]
Divide both sides by \(-2\).
\[x=0\]
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