Вычислите а) (7/15+7/30+4/5) : (2-1/3-1/2) б) - вопрос №7157304521312161101157409305 от ilugladyshev 03.11.2022 19:30

Question

Математика: Вычислите а) (7/15+7/30+4/5) : (2-1/3-1/2) б) (1/6+1/10+1/15): (3/5-1/3-1/4) 50

ilugladyshev · Answer

А) (7/15+7/30+4/5):(2-1/3-1/2)=(45/30):(7/6)=9/6*6/7=9/7

б) (1/6+1/10+1/15):(3/5-1/3-1/4)=20
1) 1/6+1/10=5/30+3/30=8/30=4/15
2) 4/15+1/15=5/15=1/3
3) 3/5-1/3 =9/15-5/15=4/15
4) 4/15-1/4=16/60-15/60=1/60
5) 1/3:1/60=1/3*60=20