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3 years ago

8×9=(5+y)×9 , what is y?

1 answer:

5 0

8 * 9 = (5 + y) * 9
multiply 8 and 9

72 = (5 + y) * 9
use the distributive property

72 = 45 + 9y
subtract 45 from both sides

27 = 9y
divide both sides by 9 to isolate the variable

y = 3

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