Question

1} 7/18 умножить на 9/14 плюс 1/3 умножит на 6/7 2} 2целая 2/5 умножить на 5/6 минус 3/4 умножить на 1целая 2/3 3} 1целая 17/28 умножить на 7/9 плюс 14/25 умножить на 5/7 НЕ ХОЧУ 2 ПОМОГИТЕ !!! ДОБРЫЕ ЛЮДИ

Answer 1

1)63/252+6/21=15/28
2)60/30-15/12=3/4
3)вроде бы равно 5.25

Answer 2

Calculation 1

To solve the expression 1 + 7/18 * 9/14 + 1/3 * 6/7, we can follow the order of operations (PEMDAS/BODMAS) and simplify step by step.

1. Multiply 7/18 by 9/14: - (7/18) * (9/14) = (63/252) = 21/84 = 1/4

2. Multiply 1/3 by 6/7: - (1/3) * (6/7) = (6/21) = 2/7

3. Add the results from step 1 and step 2: - 1 + (1/4) + (2/7) = (28/28) + (7/28) + (8/28) = 43/28

Therefore, the value of the expression is 43/28.

Calculation 2

To solve the expression 2 2/5 * 5/6 - 3/4 * 1 2/3, we can follow the order of operations (PEMDAS/BODMAS) and simplify step by step.

1. Convert the mixed numbers to improper fractions: - 2 2/5 = (2 * 5 + 2)/5 = 12/5 - 1 2/3 = (1 * 3 + 2)/3 = 5/3

2. Multiply 2 2/5 by 5/6: - (12/5) * (5/6) = (60/30) = 2

3. Multiply 3/4 by 1 2/3: - (3/4) * (5/3) = (15/12) = 5/4

4. Subtract the result from step 3 from the result from step 2: - (2) - (5/4) = (8/4) - (5/4) = 3/4

Therefore, the value of the expression is 3/4.

Calculation 3

To solve the expression 1 17/28 * 7/9 + 14/25 * 5/7, we can follow the order of operations (PEMDAS/BODMAS) and simplify step by step.

1. Convert the mixed number to an improper fraction: - 1 17/28 = (1 * 28 + 17)/28 = 45/28

2. Multiply 1 17/28 by 7/9: - (45/28) * (7/9) = (315/252) = 35/28 = 5/4

3. Multiply 14/25 by 5/7: - (14/25) * (5/7) = (70/175) = 2/5

4. Add the results from step 2 and step 3: - (5/4) + (2/5) = (25/20) + (8/20) = 33/20

Therefore, the value of the expression is 33/20.

I hope this helps! Let me know if you have any further questions.