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Question

Find the value of expression:
 3a - 4b - 8 + 5a + 2b, if a = 3 and b = 7.
  1. 2


Solution

The correct option is A 2

 Simplify the expression:3a4b8+5a+2b
=(3a+5a)+(4b+2b)8
=8a2b8

Substituting  a=3 and b=7 in the above expression,

8a2b8 
=8×32×78
=24148 
=2422
=2

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