SOLUTION: the sum of three numbers is -4. the second number decreased by the third is equal to the first. the sum of the first and second numbers is -5. find the numbers.

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Question 1147908: the sum of three numbers is -4. the second number decreased by the third is equal to the first. the sum of the first and second numbers is -5. find the numbers.
Answer by josgarithmetic(39629) About Me  (Show Source):
You can put this solution on YOUR website!
system%28x%2By%2Bz=-4%2Cx=y-z%2Cx%2By=-5%29

E1-E3:
highlight%28z=1%29

Revise using the z result:
system%28x%2By=-5%2Cx-y=-1%29
Add them: x=-3
Subtract them: y=-2


first number, -3
second number, -2
third number, 1