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30-11-2020
Mathematics

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Whats the exspression equivalent to (-2x + 8.1y)

Whats the exspression equivalent to 2x 81y class=

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Аноним Аноним

30-11-2020

Answer:

b. 7x + 2.8y

Step-by-step explanation:

distribute the negative sign:

= -2x + 8.1 + -1(-9x + 5.3y)

= -2x + 8.1 + -1(-9x) + -1(5.3y)

= -2x + 8.1 +9x + -5.3y

combine like terms:

= (-2x + 9x) + (8.1 + -5.3y)

= 7x + 2.8y

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