Answer:
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![(4)/(5)](https://img.qammunity.org/2020/formulas/mathematics/high-school/xfv56szu341sgt4xkshjneg6z7o9hs1w3r.png)
Explanation:
So, we need to analyze the problem first. We first need to identify the like terms. 2/5m and -3/5m are like terms, since they share a variable. We can move the -3/5 and subtract is from 2/5m
2/5m - 3/5m = -1/5m
And then we have the -4/5, which has no like terms, so it can just sit to the side and be pretty.
Our answer is:
-
![(4)/(5)](https://img.qammunity.org/2020/formulas/mathematics/high-school/xfv56szu341sgt4xkshjneg6z7o9hs1w3r.png)