What is 2m-3n-[-2m+n-(m-n)] ?

The solution to 2m-3n-[-2m+n-(m-n)] is 5m-5n

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simplify 2m-3n-[-2m+n-(m-n)]

simplify

2 m - 3 n - [- 2 m + n - (m - n)]

5 m - 5 n

Solution steps

2 m - 3 n - (- 2 m + n - (m - n))

Simplify

- (- 2 m + n - (m - n)) : 3 m - 2 n

= 2 m - 3 n + 3 m - 2 n

Group like terms

= 2 m + 3 m - 3 n - 2 n

Add similar elements:

2 m + 3 m = 5 m

= 5 m - 3 n - 2 n

Add similar elements:

- 3 n - 2 n = - 5 n

= 5 m - 5 n

6^{2} + 8^{2}

\frac{4}{5} \cdot \frac{7}{8}

\frac{y}{x y}

(\frac{1}{2} a - b)^{2}

\frac{6.9 - 7}{6. 9 ^{2} - 8 ( 6.9 ) + 7}