Question

1 2/7 × 1 3/4 - 3,36________________ 0,8 + 0,5

Answer 1

Ответ:

Пошаговое объяснение:

1) 1 2/7 * 1 3/4= 9/7 * 7/4= 9/4= 2 1/4= 2,25

2) 2,25-3,36= -1,11

3) 0,8+0,5= 1,3

4) -1,11/1,3= 111/100*10/13= 111/130

Answer 2

To solve the expression, let's follow the order of operations (PEMDAS/BODMAS):

Step 1: Simplify the mixed numbers and convert them to improper fractions. 1 2/7 = (7 × 1 + 2)/7 = 9/7 1 3/4 = (4 × 1 + 3)/4 = 7/4

Step 2: Calculate the subtraction and division. (9/7 × 7/4) - 3.36 ÷ (0.8 + 0.5)

Step 3: Perform the multiplication and division operations first. (9/7 × 7/4) = 63/28 3.36 ÷ (0.8 + 0.5) = 3.36 ÷ 1.3 = 2.5846153846153845 (rounded to 15 decimal places)

Step 4: Perform the subtraction and addition operations. 63/28 - 2.5846153846153845

To subtract fractions, you need a common denominator. The common denominator for 28 and 1 is 28. Converting the decimal to a fraction with the same denominator:

63/28 - (2.5846153846153845 × 28/28) = 63/28 - 72/28 = (63 - 72)/28 = -9/28

So the final result is -9/28.