Question

25/54:(7/12-13/18)+2*2 2/3​

Answer 1

Ответ:

Смотри на фото во вложении.......

Answer 2

To simplify the expression, let's break it down step by step:

Step 1: Simplify the expression within the parentheses. 7/12 - 13/18 = (7/12) - (13/18)

To subtract fractions, we need to find a common denominator, which in this case is 36.

(7/12) - (13/18) = (21/36) - (26/36) = (21 - 26)/36 = -5/36

Step 2: Substitute the result back into the expression. 25/54: (-5/36) + 2 * 2 2/3

Step 3: Simplify the expression further. To multiply a whole number by a mixed fraction, we first need to convert the mixed fraction to an improper fraction.

2 2/3 = (3 * 2 + 2)/3 = 8/3

Substituting this back into the expression:

25/54: (-5/36) + 2 * (8/3)

Step 4: Perform the multiplication and addition. 2 * (8/3) = 16/3

Substituting this back into the expression:

25/54: (-5/36) + 16/3

To add fractions, we need a common denominator. The common denominator here is 54:

(-5/36) + 16/3 = (-5/36) + (16/3)(18/18) = (-5/36) + (288/54) = (-5/36) + (16/3)

Now we have the same denominator, so we can add the numerators:

(-5/36) + (16/3) = (-5 + 192)/36 = 187/36

Finally, we have:

25/54: (-5/36) + 16/3 = 187/36