SOLUTION: omplete the solution to evaluate the expression. −3 + 9 − (−9) = −3 + 9 i did added -3+9-(-9) and got 15 then i added that and got 21

Question 788941: omplete the solution to evaluate the expression.
−3 + 9 − (−9) = −3 + 9

i did added -3+9-(-9) and got 15 then i added that and got 21
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
−3 + 9 − (−9) + −3 + 9
i added -3+9-(-9) and got 15
Correct
then i added -3+9 and got 21
Correct
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Cheers,
Stan H.
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SOLUTION: omplete the solution to evaluate the expression. &#8722;3 + 9 &#8722; (&#8722;9) = &#8722;3 + 9 i did added -3+9-(-9) and got 15 then i added that and got 21