Question 515331
The is a missing parenthesis in the problem statement, so I will assume it is:
(3/4+ 9/10)*(2/3+(-8)/15)
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The answer is 11/50.
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But how do you get there?
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solve each half of the multiplication separately
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(3/4+9/10) = 15/20 + 18/20 = 33/20
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(2/3 - 8/15) = 10/15 - 8/15 = 2/15
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then multiply and simplify
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33/20 * 2/15 = 66/300 = 11/50
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Done.