(1/4-(1/4+1/9): 1/9)*(2/3+7/15: (0.4-1/6)) = (1,09-0.29)*1целая1/4: - вопрос №72491651414191923715041610902911418916 от vovazvyagin 21.03.2022 22:27

Question

Математика: (1/4-(1/4+1/9): 1/9)*(2/3+7/15: (0.4-1/6)) = (1,09-0.29)*1целая1/4: ((18.9-16целых13/20)*8/9)=

vovazvyagin · Answer

(1/4 -(1/4+1/9):1/9)*(2/3+7/15:(0,4 -1/6))= -15

1) 1/4+1/9=9/36+4/36=13/36
2) 13/36 : 1/9=13/36 * 9=13/4=3 1/4
3) 1/4 - 3 1/4= - 3
4) 0,4 -1/6=2/5 -1/6=12/30 - 5/30=7/30
5) 7/15 : 7/30=7/15 * 30/7=2
6) 2/3+2=5
7) - 3*5= - 15

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(1,09 -0,29)*1 1/4 :((18,9 -16 13/20)*8/9)=0,5

1) 1,09-0,29=0,8
2) 0,8*1 1/4=4/5 * 5/4=1
3) 18,9 -16 13/20=18 9/10 - 16 13/20=18 18/20 - 16 13/20=2 5/20=2 1/4
4) 2 1/4 * 8/9=9/4 * 8/9=2
5) 1 : 2=1/2=0,5