Question

2/7 *4 3/8-1/24 68/х-4/5 480480 : 24 − 4 · (81 − 63) : 2—решение и ответ. 301269:15-452:(122-87)*12—решение и ответ. Плиз, хэлп ми!!!!)

Answer 1

2/7*4 3/8-1/24=2/7*35/8-1/24=5/4-1/24=29/24
68/x-4/5=68/x-0,8=68/x-4/5=340-4x/5x
48080:24-4*(81-63):2=20020-4*18:2=20020-36=19984
301269:15-452:(122-87)*12=20084,6-452:35*12=100423/5-452/35*12=100423/5-5425/35=697537/35

Answer 2

Sure, I'd be happy to help you solve these expressions!

Let's take them one by one:

1. 2/7 *4 3/8-1/24

To solve this expression, we need to perform the multiplication and subtraction operations in the correct order:

2/7 *4 3/8 - 1/24 = 8/7 * 3/8 - 1/24 (multiplying 2/7 and 4) = 24/56 - 1/24 (multiplying 8/7 and 3/8) = 12/28 - 2/56 (finding a common denominator for 56 and 24) = 24/56 - 2/56 (simplifying 12/28) = 22/56 (subtracting 2/56 from 24/56)

So the final answer is 22/56, which can be simplified to 11/28.

2. 68/х-4/5

We don't have enough information to solve for x, so we'll just leave the expression as is.

3. 480480 : 24 − 4 · (81 − 63) : 2

To solve this expression, we need to perform the multiplication and division operations in the correct order:

480480 : 24 − 4 · (81 − 63) : 2 = 20020 - 4 · 18 : 2 (dividing 480480 by 24) = 20020 - 4 · 9 (subtracting 4 times 18 from 20020) = 20020 - 36 (multiplying 4 and 9) = 19984

So the final answer is 19984.

4. 301269:15-452:(122-87)*12

To solve this expression, we need to perform the multiplication, division, and subtraction operations in the correct order:

301269:15-452:(122-87)*12 = 20084 - 452 : 35 * 12 (dividing 301269 by 15) = 20084 - 12 * 13 (dividing 452 by 35) = 20084 - 156 (multiplying 12 and 13) = 19928

So the final answer is 19928.

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