Ответ:
11/20
Пошаговое объяснение:
- 1 /12 + 2/ 5 = 2 /5 - 1 /12 = 2·12/ 5·12 - 1·5/ 12·5 = 24 /60 - 5 /60 = 24 - 5/ 60 = 19 /60
-0.36 - 0.64= - (0.36 + 0.64) = - 1
19 /60 - (-1) = 19 /60 + 1 = = 1 19/ 60
1 19/ 60 - 1 13/ 15 = 19 + 1·60 /60 - 13 + 1·15/ 15 = 79 /60 - 28/ 15 = 79·1 60·1 - 28·4/ 15·4 = 79 /60 - 112/ 60 = 79 - 112 /60 = - 33 /60 = - 11 · 3 /20 · 3 = - - 11 /20
1)-1/12+2/5=-60+24/60
2)-36/100-64/100=-100/100=-1
3)-36/60-(-1)-28/15=-36/60+1/1-28/15=-36+60-112/60=-88/60=-22/15
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Answers & Comments
Ответ:
11/20
Пошаговое объяснение:
- 1 /12 + 2/ 5 = 2 /5 - 1 /12 = 2·12/ 5·12 - 1·5/ 12·5 = 24 /60 - 5 /60 = 24 - 5/ 60 = 19 /60
-0.36 - 0.64= - (0.36 + 0.64) = - 1
19 /60 - (-1) = 19 /60 + 1 = = 1 19/ 60
1 19/ 60 - 1 13/ 15 = 19 + 1·60 /60 - 13 + 1·15/ 15 = 79 /60 - 28/ 15 = 79·1 60·1 - 28·4/ 15·4 = 79 /60 - 112/ 60 = 79 - 112 /60 = - 33 /60 = - 11 · 3 /20 · 3 = - - 11 /20
Ответ:
1)-1/12+2/5=-60+24/60
2)-36/100-64/100=-100/100=-1
3)-36/60-(-1)-28/15=-36/60+1/1-28/15=-36+60-112/60=-88/60=-22/15
Пошаговое объяснение: