Question

2 4/13*(3/8-4\15)-11 : 5 1/2​

Answer 1

Ответ:

решила

Объяснение:

Answer 2

To solve this expression, follow the order of operations (PEMDAS/BODMAS - Parentheses/Brackets, Exponents/Orders, Multiplication and Division, Addition and Subtraction) and convert mixed numbers into improper fractions where necessary.

Expression: 2 4/13 * (3/8 - 4/15) - 11 : 5 1/2

Step 1: Convert mixed numbers to improper fractions: 2 4/13 = (2 * 13 + 4) / 13 = 30 / 13 5 1/2 = (5 * 2 + 1) / 2 = 11 / 2

Step 2: Perform the calculations inside the parentheses: 3/8 - 4/15 = (3 * 15 - 4 * 8) / (8 * 15) = (45 - 32) / 120 = 13 / 120

Step 3: Substitute the values back into the expression: 30/13 * (13/120) - 11 / (11 / 2)

Step 4: Perform the multiplications and divisions: (30/13) * (13/120) = 1/4 11 / (11 / 2) = 2

Step 5: Substitute the values back into the expression: 1/4 - 2

Step 6: Subtract: 1/4 - 2 = -7/4

So, the final result is -7/4 or -1 3/4.