Question

4. Simplify the following and find the value of : (a) 5a -5- 7a +3a +2, when a =-1.​

Answer 1

1= -1

5(-1) - 5 - 7(-1) + 3(-1) + 2

-5 - 5 + 7 - 3 + 2

-10 + 7 - 3 +2
-3 - 3 + 2

-6 +2
= -4
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