Question

3/5 х 2/7 х 5/6 = ? 3/4 х 3/8 + 3/4 х 5/8 = ? 300 х 1/16 = ? (2/5)в 3 степене = ? Решите хотя бы два :с

Answer 1

Ответ:

Пошаговое объяснение:

3/5 *2/7 *5/6=1/2 *2/7=1/7

3/4 *3/8 +3/4 *5/8=3/4(3/8 +5/8)=3/4 *8/8=3/4 *1=3/4=0,75

300*1/16=75/4=18 3/4=18,75

(2/5)^3=(2^3)/5^3=8/125=0,064

Answer 2

Sure, I can help you with that! Here are the solutions to two of the problems you provided:

1. 3/5 х 2/7 х 5/6 = ? To multiply fractions, we simply multiply the numerators together and then multiply the denominators together. So, we have:

3/5 х 2/7 х 5/6 = (3 х 2 х 5) / (5 х 7 х 6) = 30 / 210

We can simplify this fraction by dividing both the numerator and denominator by their greatest common factor, which is 30. That gives us:

30 / 210 = 1/7

Therefore, 3/5 х 2/7 х 5/6 = 1/7.

2. 3/4 х 3/8 + 3/4 х 5/8 = ? To add fractions, we need to have a common denominator. In this case, the denominators are already multiples of each other, so we can use 8 as our common denominator. That gives us:

3/4 х 3/8 + 3/4 х 5/8 = (3/4 х 3/8) + (3/4 х 5/8) = 9/32 + 15/32

Now we can simply add the numerators together and keep the same denominator:

9/32 + 15/32 = 24/32

We can simplify this fraction by dividing both the numerator and denominator by their greatest common factor, which is 8. That gives us:

24/32 = 3/4

Therefore, 3/4 х 3/8 + 3/4 х 5/8 = 3/4.

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