Question

Simplify the expression and find its value if a= -4  ,b=-5

6b-8a-4-9+2b

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Answer 1

=8b-8a-4-9

=8b-8a-13

=8b+5a

=8b+5a Ans.

Answer 2

Step-by-step explanation:

6b+2b-8a-4-9

Therefore, 8b-8a-13.....(1)

Now putting the value of a and b in eq (1)

8*-5-8*-4-13=-40+32-13=72-13=59 ans