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Mathematics, 05.07.2019 10:30 celestemaria0727

What is -1/2+1/3 , -3 1/5+(-6 1/2) , 5//8) , -9/10-2/5 , 6 3/ 1/5) answer all in sum or difference

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What is -1/2+1/3 , -3 1/5+(-6 1/2) , 5//8) , -9/10-2/5 , 6 3/ 1/5) answer all in sum or difference...
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