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20-01-2021
Mathematics

contestada

Simplify each algebraic expression.
2a +3(a +7)–(3a +3)

Respuesta :

ZJSG09112007 ZJSG09112007

20-01-2021

Answer:

2a+18

Step-by-step explanation:

[tex]2a +3(a +7)-(3a +3)\\\\Expand\: 3(a +7) :\\3a+21\\\\=2a+3a+21-\left(3a+3\right)\\\\-(3a+3)=-3a-3\\\\=2a+3a+21-3a-3\\\\Simplify\\\\=2a+18[/tex]

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