Question

Вычеслить 15 1/2-(6 1/4+2 3/8)

Answer 1

Ответ:

7,625

Пошаговое объяснение:

6 1/4+ 2 3/8= 63/8

15 1/2 - 63/8= 61/8= 7,625

Answer 2

To calculate the expression, you need to follow the order of operations, which is usually remembered using the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).

Let's first simplify the expression inside the parentheses:

6 1/4 + 2 3/8

To add these mixed numbers, we need to convert them into improper fractions:

6 1/4 = (4 * 6 + 1) / 4 = 25/4 2 3/8 = (8 * 2 + 3) / 8 = 19/8

Now, add the fractions:

25/4 + 19/8

To add fractions, they must have a common denominator. In this case, the common denominator is 8:

(25/4)*(2/2) + 19/8 (50/8) + 19/8 = 69/8

Now that we have simplified the expression inside the parentheses, we can proceed with the overall expression:

15 1/2 - (6 1/4 + 2 3/8)

15 1/2 = (2 * 15 + 1) / 2 = 31/2

Now, substitute the simplified value of the expression inside the parentheses:

31/2 - 69/8

To subtract fractions, they must have a common denominator. The common denominator for 2 and 8 is 8:

(31/2)*(4/4) - 69/8 (124/8) - 69/8 = 55/8

So, the final result is 55/8.