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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