jdram13 jdram13

12-06-2017
Mathematics

contestada

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

Respuesta :

03-07-2019

Answer:

20

Step-by-step explanation:

[tex]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[/tex]

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