Respuesta :

In order to add fractions, you need to make every denominator the same. So multiply each fraction by a number that you can get a likely denominator from.

7/10m - 1/3m + 2m

21/30m - 10/30m + 60/30m

11/30m + 60/30m

71/30m

2 11/30m

*the answer is a)*