Question

9 1/4*8-12/3*5 1/2-4 2/5* 4 7/12

Answer 1

Ответ:

31. 5/6

Пошаговое объяснение:

1) 9. 1/4 * 8 = 37/4 * 8 =

37/1 * 2 = 74/1 = 74

2) 12/3 * 5. 1/2 = 4 * 11/2 =

44/2 = 22

3) 4. 2/5 * 4. 7/12 = 22/5 * 55/12 = 11/1 * 11/6 = 121/6 = 20. 1/6

4) 74 - 22 = 52

5) 52 - 20. 1/6 =

51. 6/6 - 20. 1/6 = 31. 5/6

Answer 2

Ответ:  31 5/6.

Пошаговое объяснение:

9 1/4 * 8 - 12/3 * 5 1/2 - 4 2/5 * 4 7/12= 31 5/6.

1)  9 1/4 * 8= 37/4 *8=74;

2)  12/3 * 5 1/2 = 12/3 * 11/2= 22;

3)  4 2/5 * 4 7/12 = 22/5 * 55/12= 121/6;

4)  74-22-121/6=52 -20 1/6 =191/6= 31 5/6.

Answer 3

To solve this expression, you should follow the order of operations, which is typically remembered using the acronym PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). Here's how you can calculate the expression step by step:

1. First, deal with the multiplication and division:

   • 9 1/4 * 8 = 37 (Convert the mixed number to an improper fraction: 37/4)
   • 12/3 * 5 1/2 = 20 1/2 (Convert the mixed number to an improper fraction: 41/2)
   • 4 2/5 * 4 7/12 = 50/5 * 55/12 = 250/60 = 25/6

2. Now, you have:

   • 37 - 20 1/2 - 25/6

3. Subtract 20 1/2 from 37:

   • 37 - 20 1/2 = 16 1/2 (Convert the mixed number to an improper fraction: 33/2)

4. Now, you have:

   • 33/2 - 25/6

5. To subtract these fractions, you need a common denominator, which is 6 in this case. So, convert 33/2 to an equivalent fraction with a denominator of 6:

   • (33/2) * (3/3) = 99/6

6. Now, you can subtract the fractions:

   • 99/6 - 25/6 = 74/6

7. Simplify the fraction, if possible:

   • 74/6 = 37/3

So, the final result of the expression is 37/3 or 12 1/3 when expressed as a mixed number.