Question

Выполните деление: 11/15 : 3/8= 6/35 : 18/25= 12/55: 48/77 21/40 : 3/4 P.s спасиибо)

Answer 1

 Деление состоит в умножении на обратную дробь, далее числитель умножается на числитель, знаменатель умножается на знаменатель, но можно (и нужно) поискать способы сократить (найти кратное), чтобы понапрасну не терзать мозговой калькулятор :-), что, впрочем не всегда возможно. Подробности - в файле.

Answer 2

11/15:3/8=11/15*8/3=88/45= 1 43/45
6/35:18/25=6/35*25/18=150/630=5/21
12/55:48/77=12/55*77/48=924/2640=7/20
21/40:3/4=21/40*4/3=84/120=7/10

Answer 3

Division: 11/15 : 3/8

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction. The reciprocal of a fraction is obtained by swapping the numerator and the denominator.

So, to divide 11/15 by 3/8, we multiply 11/15 by the reciprocal of 3/8, which is 8/3.

The calculation is as follows:

11/15 : 3/8 = 11/15 * 8/3

To simplify the result, we can cancel out common factors between the numerators and denominators. In this case, there are no common factors to cancel out.

Therefore, the result of the division is 88/45.

Division: 6/35 : 18/25

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction. The reciprocal of a fraction is obtained by swapping the numerator and the denominator.

So, to divide 6/35 by 18/25, we multiply 6/35 by the reciprocal of 18/25, which is 25/18.

The calculation is as follows:

6/35 : 18/25 = 6/35 * 25/18

To simplify the result, we can cancel out common factors between the numerators and denominators. In this case, there are no common factors to cancel out.

Therefore, the result of the division is 5/21.

Division: 12/55 : 48/77

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction. The reciprocal of a fraction is obtained by swapping the numerator and the denominator.

So, to divide 12/55 by 48/77, we multiply 12/55 by the reciprocal of 48/77, which is 77/48.

The calculation is as follows:

12/55 : 48/77 = 12/55 * 77/48

To simplify the result, we can cancel out common factors between the numerators and denominators. In this case, there are no common factors to cancel out.

Therefore, the result of the division is 924/2640, which can be further simplified to 77/220.

Division: 21/40 : 3/4

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction. The reciprocal of a fraction is obtained by swapping the numerator and the denominator.

So, to divide 21/40 by 3/4, we multiply 21/40 by the reciprocal of 3/4, which is 4/3.

The calculation is as follows:

21/40 : 3/4 = 21/40 * 4/3

To simplify the result, we can cancel out common factors between the numerators and denominators. In this case, there are no common factors to cancel out.

Therefore, the result of the division is 84/120, which can be further simplified to 7/10.

I hope this helps! Let me know if you have any further questions.