Question

28. The sum of 3 expressions is 8 + 13a + 7a”. Two of them are 2a+ + 3a +2 and 3a’ - 4a + 1. Find
SM Ex-4.9
the third expression.
ſiiven that the sum of 3 expressions is 8 - 13a - 7a?​

Answer 1

First we will find the sum of given two expressions:-

so

2a+3a+2+3a-4a+1

= 4a+3

Now we will subtract this from the sum of 3 expressions

so

8-13a-7a-(4a+3)

= 5-24a