Question

53/7+(-21/3)-(3 7/15 срочно​

Answer 1

Пошаговое объяснение:

53/7+(-21/3)-(-3 7/15)=

7 4/7+(-7)+3 7/15=

2/7+3 7/15=

3 (60-49)/105=

3 11/105

Answer 2

Пошаговое объяснение:

53/7 + (-21/3) - (3 7/15) = 7 4/7 - 7 - 3 7/15 =

4/7 - 3 7/15 = 60/105 - 3 49/105 =

60/105 - 2 154/105 = -2 94/105

Answer 3

To evaluate the expression, let's simplify each term step by step:

1. Divide 53 by 7: 53/7 = 7.57
2. Divide -21 by 3: -21/3 = -7
3. Convert the mixed number 3 7/15 to an improper fraction: Multiply the whole number (3) by the denominator of the fraction (15) and add the numerator (7). 3 * 15 + 7 = 45 + 7 = 52. The new numerator is 52, and the denominator remains 15.
4. Subtract 52/15 from the previous result: 7.57 - 52/15.

To subtract fractions, we need to find a common denominator for both fractions, which is 15 in this case:

7.57 = 7.57 * (15/15) = 113.55/15

Now we can subtract the fractions:

113.55/15 - 52/15 = (113.55 - 52)/15 = 61.55/15

So, the simplified expression is 61.55/15.