How do you solve 2m m-87?

Answer 1

You need to resubmit this so it is an equation.

Could you mean 2m=m-87?

If so, then follow this.

subtract an m from each side:

2m-m = m-87-m

simplify:

m = -87

Now plug that number back in to check:

2(-87) = (-87) minus 87

-174 = -174

so it checks.