7 upon 12 into minus 3 upon 5 plus minus 5 upon 3 into 7 upon 12
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=>7/12×-3/5+(-5/3)×7/12.
=>-21/60+(-5/3)×7/12.
=>-21/60+(-35/36).
LCM of 60 and 36 is 180.So,
=>-21×3/60×3-35×5/36×5.
=>-63-175/180.
=>-238/180.
Reducing this fraction,we get
=>-119/90.
Therefore,the answer of this question is -119/90.
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