Problem of the Week

Updated at Dec 28, 2020 8:10 AM

This week's problem comes from the equation category.

How would you solve the equation \(4(3-m)-m=7\)?

Let's begin!



\[4(3-m)-m=7\]

1
Expand.
\[12-4m-m=7\]

2
Simplify  \(12-4m-m\)  to  \(12-5m\).
\[12-5m=7\]

3
Subtract \(12\) from both sides.
\[-5m=7-12\]

4
Simplify  \(7-12\)  to  \(-5\).
\[-5m=-5\]

5
Divide both sides by \(-5\).
\[m=1\]

Done
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