How do you solve $-10 = 9m -13 -7m$ ?

Question

2458 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-05-31T06:01:29

$m=3/2=1.5$

$-10=9m-13-7m$

$-10=9m-7m-13$

$-10=2m-13$

Now add $13$ to both sides:

$-10color(red)(+13)=2m-13color(red)(+13)$

$-10+13=2mcancel(-13)cancel(+13)$

$3=2m$

Divide both sides by $2$ :

$3/color(red)(2)=(2m)/color(red)(2)$

$3/2=(cancel2m)/cancel2$

$3/2=m$

$1.5=m$

How do you solve -10 = 9m -13 -7m-10 = 9m -13 -7m?