SOLUTION: 6/7 - (-8/15) = I cannot remember how to do this type of problem

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: 6/7 - (-8/15) = I cannot remember how to do this type of problem      Log On


   

Question 778756: 6/7 - (-8/15) = I cannot remember how to do this type of problem
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
6/7 - (-8/15)
= 6/7 + 8/15
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To add or subtract, find a common denominator.
The product always works, 7*15 = 105
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6/7 + 8/15 = 90/105 + 56/105
= (90 + 56)/105
= 146/105