CBSE Class 7 Answered
Add the following expressions: 6m - 7n - 5p, -4m - 9n + 6p, -4m - 9n + 6p
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Required sum:
(6m - 7n - 5p) + (-4m - 9n + 6p) + (-4m - 9n + 6p)
= 6m - 7n - 5p - 4m - 9n + 6p - 4m - 9n + 6p
= (6m - 4m - 4m) + (-7n - 9n - 9n) + (-5p + 6p + 6p)
= (6 - 4 - 4)m + (-7 - 9 - 9)n + (-5 + 6 + 6)p
= -2m - 25n + 7p
(6m - 7n - 5p) + (-4m - 9n + 6p) + (-4m - 9n + 6p)
= 6m - 7n - 5p - 4m - 9n + 6p - 4m - 9n + 6p
= (6m - 4m - 4m) + (-7n - 9n - 9n) + (-5p + 6p + 6p)
= (6 - 4 - 4)m + (-7 - 9 - 9)n + (-5 + 6 + 6)p
= -2m - 25n + 7p
Answered by | 04 Jun, 2014, 03:23: PM
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