Posted by **p** on Friday, October 16, 2009 at 11:36am.

add -57+(-22)=-79

place numbers in acsending order 25,-13,8,-2,13,3,18=-13,-2,3,8,13,18,25

perform the indicated operation -21-(-9)/-21-(-21)=-12/-42

add -3/5+(8/35)=13/35

subtract -2.3-(-8.8)=6.5

- math115 -
**MathMate**, Friday, October 16, 2009 at 12:12pm
perform the indicated operation -21-(-9)/-21-(-21)=-12/-42

You may have parentheses missing.

You need to ADD parentheses around a denominator and a numerator of a fraction.

add -3/5+(8/35)=13/35

-3/5 = -21/35, so it cannot be positive when added to 8/35.

- math115 -
**p**, Friday, October 16, 2009 at 12:21pm
-29/35?

- math115 -
**p**, Friday, October 16, 2009 at 12:26pm
ow so the answer would be negative -13/35?

- math115 -
**MathMate**, Friday, October 16, 2009 at 1:04pm
-13/35 is correct.

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