Question

15+6=33m-21-27m combining like terms (show work)

Answer 1

Answer:

$m = \boxed 7$

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

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