Question

1 3/4 * 2 4/7 : 4 1/2 + 2 2/5 : 9/10 *3/8

Answer 1

1 3/4*2 4/7 = 4 1/2
4 1/2:4 1/2 = 1
2 2 /5:9/10 = 2 2/3
2 2/3*3/8 = 1
1 + 1 = 2
Ответ: равняется двум
Вроде ошибок нет)

Answer 2

To solve this expression, follow the order of operations (PEMDAS/BODMAS: Parentheses/Brackets, Exponents/Orders, Multiplication, Division, Addition, Subtraction) and convert mixed numbers to improper fractions if needed. Let's break it down step by step:

Step 1: Convert mixed numbers to improper fractions: 1 3/4 = (4 * 1) + 3 = 7/4 2 4/7 = (7 * 2) + 4 = 18/7 4 1/2 = (2 * 4) + 1 = 9/2 2 2/5 = (5 * 2) + 2 = 12/5

Step 2: Perform multiplication and division first: 7/4 * 18/7 = (7 * 18) / (4 * 7) = 126 / 28 9/2 + 12/5 = (9 * 5 + 12 * 2) / 10 = (45 + 24) / 10 = 69 / 10 3/8 * 9/10 = (3 * 9) / (8 * 10) = 27 / 80

Step 3: Now perform the remaining addition and subtraction: 126 / 28 + 69 / 10 - 27 / 80

To add fractions, you need a common denominator, which is 280 in this case:

(126 * 10) / (28 * 10) + (69 * 28) / (10 * 28) - (27 * 35) / (80 * 35) = 1260 / 280 + 1932 / 280 - 945 / 280

Now, combine the fractions:

(1260 + 1932 - 945) / 280 = 2247 / 280

Step 4: Simplify the fraction, if possible: 2247 / 280 = 8 7/280

So, the final result is approximately 8 7/280.