Question

15+6=33m-21-27m

combining like terms (show work)

Answer 1

`m = \boxed 7`

Combine like terms

`21=33\cdot \mathrm{m}-21-27\cdot \mathrm{m}`

Group like terms

`21=\left(33\cdot \mathrm{m}-27\cdot \mathrm{m}\right)-21`

Simplify the arithmetic

`21=6\cdot \mathrm{m}-21`

Swap sides

`6\mathrm{m}-21=21`