Evaluate 4a + 7b + 3a − 2b for a = 5 and b = −3.

Mathematics

1 answer:

blsea [12.9K]3 years ago

5 0

Answer:

Step-by-step explanation:

$4a+7b+3a-2b\qquad\text{combine like terms}\\\\=(4a+3a)+(7b-2b)\\\\=7a+5b\qquad\text{put a = 5 and b = -3 to the expression}\\\\7(5)+5(-3)=35-15=20$

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