Question

18•(11/12-8/9)÷(5/14+2/7)​

Answer 1

Ответ:

7/9

Пошаговое объяснение:

решаем в скобках и получаем

18•1/36 ÷ 9/14

сокращаем

18•1/36 • 14/9

сокращаем еще раз

2•1/18•7

вычисляем

1/9•7 = 1/9•7/1 = 1•7/9•7 = 7/9

Answer 2

Решение:

Потом в конеце примера, который ты написал пишешь ответ, которыц получился под действием 4

Answer 3

To solve the expression 18 * (11/12 - 8/9) ÷ (5/14 + 2/7), you should follow the order of operations, which is parentheses, multiplication and division (from left to right), and addition and subtraction (from left to right).

Step 1: Simplify the expressions within the parentheses: 11/12 - 8/9 = (11/12) - (8/9)

To subtract these fractions, you need to find a common denominator, which is 36.

(11/12) - (8/9) = (11/12) * (3/3) - (8/9) * (4/4) = (33/36) - (32/36) = (33 - 32)/36 = 1/36

So, 11/12 - 8/9 simplifies to 1/36.

Step 2: Now, your expression looks like this: 18 * (1/36) ÷ (5/14 + 2/7)

Step 3: Simplify the addition in the denominator: 5/14 + 2/7 = (5/14) + (4/14)

Again, you need a common denominator, which is 14.

(5/14) + (4/14) = (5 + 4)/14 = 9/14

So, 5/14 + 2/7 simplifies to 9/14.

Step 4: Now, your expression looks like this: 18 * (1/36) ÷ (9/14)

Step 5: Perform the multiplication and division from left to right: 18 * (1/36) = 18/36 = 1/2

So, the expression now looks like this: (1/2) ÷ (9/14)

Step 6: To divide fractions, you can multiply by the reciprocal of the divisor: (1/2) ÷ (9/14) = (1/2) * (14/9)

Now, multiply the fractions: (1/2) * (14/9) = (1 * 14) / (2 * 9) = 14/18

Step 7: Simplify the fraction: 14/18 = 7/9

So, the final result is 7/9.