Question

21/125*625/63*3 39/108*54/195 4-13/25*75/39

Answer 1

Пошаговое объяснение:

21/125×625/63×3=5

39/108×54/195=1/10=0,1

4-13/25×75/39=4-1=3

Answer 2

Ответ:

Пошаговое объяснение:

21/125 * 625/63 * 3 = 5

1) 21/125 * 625/63 =

1/1 * 5/3 = 5/3

2) 5/3 * 3 = 15/3 = 5

39/108 * 54/195 =

1/2 * 1/5 = 1/10

4 - 13/25 * 75/39 = 3

1) 13/25 * 75/39 =

1/1 * 3/3 = 3/3 = 1

2) 4 - 1 = 3

Answer 3

Let's simplify each of these expressions step by step:

1. (21/125) * (625/63) * 3 First, simplify within each set of parentheses: (21/125) * (625/63) * 3 = (21/125) * (625/63) * 3 = (3/5) * (25/3) * 3

   Now, cancel out common factors: (3/5) * (25/3) * 3 = (3/5) * (25/1) = (3 * 25) / (5 * 1) = 75/5 = 15

2. (39/108) * (54/195) First, simplify within each set of parentheses: (39/108) * (54/195) = (13/36) * (18/65)

   Now, multiply the numerators and denominators: (13/36) * (18/65) = (13 * 18) / (36 * 65) = 234/234 = 1

3. 4 - (13/25) * (75/39) First, simplify within the second set of parentheses: (13/25) * (75/39) = (13/25) * (25/13)

   Now, cancel out common factors: (13/25) * (25/13) = (1/1) = 1

   Finally, subtract 1 from 4: 4 - 1 = 3

So, the results of the expressions are as follows:

1. (21/125) * (625/63) * 3 = 15
2. (39/108) * (54/195) = 1
3. 4 - (13/25) * (75/39) = 3