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delete159
@delete159
April 2021
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Вычислите значения выражения
7/8*(-0,4+2(целых)3/7)-0,6*(-3(целых)1/5
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1401Tamara
7/8*(-0,4 + 2 3/7) - 0,6*(-3 1/5) = 3,695
-0,4 + 2 3/7 = - 4/10 + 2 3/7 = - 2/5 + 2 3/7 = - 14/35 + 2 15/35 = 2 1/35
7/8*2 1/35 = 7/8* 71/35 = 71/40 = 1 31/40 = 1,775
0,6*(-3 1/5) = - (0,6*3,2) = - 1,92
1,775 - (-1,92) = 1,775+1,92 = 3,695
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1401Tamara
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Answers & Comments
-0,4 + 2 3/7 = - 4/10 + 2 3/7 = - 2/5 + 2 3/7 = - 14/35 + 2 15/35 = 2 1/35
7/8*2 1/35 = 7/8* 71/35 = 71/40 = 1 31/40 = 1,775
0,6*(-3 1/5) = - (0,6*3,2) = - 1,92
1,775 - (-1,92) = 1,775+1,92 = 3,695