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Add: 5m - 7n, 3n - 4m + 2, 2m - 3mn - 5 - Mathematics

Add: 5m - 7n, 3n - 4m + 2, 2m - 3mn - 5

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Solution

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

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

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

= m (5 - 4 + 2) + n (-7 + 3) -3mn + 2 - 5

= 3m - 4n - 3mn - 3

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APPEARS IN

NCERT Class 7 Maths
Chapter 12 Algebraic Expressions
Exercise 12.2 | Q 2.06 | Page 239
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