- 3 целых 1/2 - ( - 1 целая 3/4) 2 целых 2/3 - 3 целых 5/9 -1 целая 5/8 + 3/4. Created by Сережа90. matematika-ru

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April 2021 1 17 Report

- 3 целых 1/2 - ( - 1 целая 3/4)
2 целых 2/3 - 3 целых 5/9
-1 целая 5/8 + 3/4

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jekadva $-3 \frac{1}{2} -(-1 \frac{3}{4} )=- \frac{7}{2} + \frac{7}{4} = \frac{-14+7}{4} = - \frac{7}{4} =-1 \frac{3}{4} \\ \\ 2 \frac{2}{3} -3 \frac{5}{9} =2 \frac{6}{9} -3 \frac{5}{9} =-(2 \frac{14}{9} -2 \frac{6}{9} )=- \frac{8}{9} \\ \\ - \frac{5}{8} + \frac{3}{4} =-(1 \frac{5}{8} - \frac{6}{8} )=-(\frac{13}{8} - \frac{6}{8}) =- \frac{7}{8}$

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