6 3/4:9+24:6/7-1/9:4/21
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53 2/3-22 14/15:2 2/3
(по действиям)
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53 2/3-22 14/15:2 2/3
(по действиям)
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1пример: 1) 6 3/4:9=27/4:9=27/4*1/9=3/4 2) 24:6/7=24*7/6=28 3) 1/9:4/21=1/9*21/4=7/12 4) 3/4+28=28 3/4 5) 28 3/4 - 7/12=28+3/4-7/12=28+9/12-7/12=28+2/12=28+1/6=28 1/6 - ответ 2пример: 1) 22 14/15:2 2/3=344/15:8/3=344/15*3/8=43/5=8 3/5 2) 53 2/3-8 3/5=45+2/3-3/5=45+10/15-9/15=45+1/15=45 1/15 - ответ