Упростить выражение: 2/7(4 2/3 м-1,4)-2/9(6м+2,7). Created by 258456. matematika-ru

9(6м+2,7)...

НеВиД

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2/7(4 2/3м-1,4)-2/9(6м+2,7)=
2/7*14m/3-2/7*14/10-2/9*6m/1-2/9*27/10=
4m/3-0.4-4m/3-0.6=-1

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Svet1ana

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$\frac{2}{7}(4\frac{2}{3}m-1,4)-\frac{2}{9}(6m+2,7)=\frac{2}{7}(\frac{14}{3}m-1,4)-\frac{2}{9}(6m+2,7)=\frac{4}{3}m-0,4-\frac{4}{3}m-0,6=(\frac{4}{3}m-\frac{4}{3}m)+(-0,4-0,6)=-1$

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