3 years ago

If -4 is added to a number and them sum is doubled, the result is -16 less than the number. find the number.

1 answer:

4 0

Let the number be x
(-4+x)×2 = x-(-16)
-8-2x=x+16
-2x-x=16+8
-3x=24
x=24÷-3
x=-8

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