a number is decreased by seven. then the new number multiplied by 3 to get a answer of-9 what is the orginal number

1 answer:

4 0

Your answer is 4. You subtract 7 from 4 to give you -3. You then multiply -3 by 3 to give you -9.

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riadik2000 [5.3K]

-x-y=1
-y=1+x
y=-1-x

-1-x=-2x+9
-x=-2x+10
x=10

y=-1-10
y=-11

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