Find the sum of the following expressions:
$4a+6b+5c$, $-3a-9b$, $a+3b-4c$.

Given:

Given expressions are $4a + 6b + 5c$, $-3a-9b$, and $a + 3b - 4c$.

To do:

We have to find the sum of the given expressions.

Solution:

Sum of the expressions $= (4a+6b+5c)+ (-3a-9b) + (a+3b-4c)$

                                           $= (4-3+1)a + (6-9+3)b+(5-4)c$

                                           $=2a+c$.

The sum of the given expressions is $2a+c$.  

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Updated on: 10-Oct-2022

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