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26-05-2020
Mathematics

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-0.4a + 3 = 7
a =
plz help

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wegnerkolmp2741o wegnerkolmp2741o

26-05-2020

Answer:

a = -10

Step-by-step explanation:

-0.4a + 3 = 7

subtract 3 from each side

-0.4a + 3-3 = 7-3

-.4a = 4

Divide each side by -.4

-.4a/ -.4 = 4/-.4

a = - 10

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