Question

Add 5m – 7n, 3n - 4m + 2, 2m -3mn -5

Answer 1

first of all you group the like terms

-7n + 3n - 4m + 2m 3mn + 2 - 5

Next, you sum the like terms

-7n +3n = -4n. -4m +2m = -2m. -5+2 =-3

where =3mn -2m -4n -3