jmclynch0711 jmclynch0711

03-12-2020
Mathematics

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fishwithpaypal fishwithpaypal

03-12-2020

Answer:

1. -5a

Step-by-step explanation:

The definition of combining like terms is adding their coefficients, for example: 2x + 3x = (2+3)x = 5x.

So for this one, -21a+16a = (-21+16)a = -5a.

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