Вопрос школьника по предмету Математика
35 — баллов + лучший ответ. не просто ответ а вычислите!
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20,5 * ( — 46 ) =
-3 1/2 * ( — 4/7) =
1 1/8 * ( — 5 1/3) =
-2 2/15 : ( — 6,25 ) =
3 3/7 : ( — 8/25 ) =
Ответ учителя по предмету Математика
20,5* (-46)= -943
-3 1/2* (-4/7)=-7/2*(-4/7)= 2
11/8*(-5 1/3)= 11/8 *(-16/3)=22/3=7 1/3
-2 2/15 : (-6.25)= -32/15: (-25/6) = -32/15 *(-6/25) =192/375=64/125
3 3/7 : (-8/25)= 24/7 *(-25/8) =600/56=75/7=10 5/7
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