Задача по математике 6 класс № 142
а) 5/8 + 7/8 - 1/8 = (5+7-1)/8 = 11/8 = ((11-8)+8)/8 = 1+3/8=1 3/8
б) 5/9 - (4/9 - 1/9) = 5/9 - (4-1)/9 = 5/9-3/9=2/9
в) 4 4/33 + 3 7/33 = (4+3)+(4/33+7/33)=7+(4+7)/33=7+11/33=7+1/3=7 1/3
г) 5 13/18 - 2 7/18 = (5-2)+(13/18-7/18)=3+(13-7)/18=3+6/18=3+1/3=3 1/3
а) 5/8 + 7/8 - 1/8 = (5+7-1)/8 = 11/8 = ((11-8)+8)/8 = 1+3/8=1 3/8
б) 5/9 - (4/9 - 1/9) = 5/9 - (4-1)/9 = 5/9-3/9=2/9
в) 4 4/33 + 3 7/33 = (4+3)+(4/33+7/33)=7+(4+7)/33=7+11/33=7+1/3=7 1/3
г) 5 13/18 - 2 7/18 = (5-2)+(13/18-7/18)=3+(13-7)/18=3+6/18=3+1/3=3 1/3
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