22,2:5 2\7-2 3/5= (7 1/4-6 7/18)*7,2+2,8=. Created by Аlisa878787878. matematika-ru

18)*7,2+2,8=...

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22,2:5 2\7-2 3/5=
(7 1/4-6 7/18)*7,2+2,8=

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1301c 22 2/10:5 2/7=222/10:37/7=222/10*7/37=6/10*7/1=42/10=4,2
4,2-2 3/5=42/10-13/5=42/10-26/10=16/10=1,6

7 1/4-6 7/18=7-6+1/4-7/18=1+9/36-14/36=1+(-5/36)=36/36-5/36=31/36
31/36*7,2=31/36*72/10=31/1*2/10=62/10=6,2
6,2+2,8=9

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