Question

4⅓ × 5 + 2,4 : (-0,1) - ¹⁴/15(четырнадцать пятнадцатых) : 1⅖=​

Answer 1

Решение на фото.

Извиняюсь за свой кривой почерк:)

Answer 2

Let's solve this mathematical expression step by step:

1. Calculate 4⅓: 4⅓ = 4 + 1/3 = 12/3 + 1/3 = 13/3.

2. Calculate ¹⁴/15: ¹⁴/15 = 14/15.

3. Calculate 1⅖: 1⅖ = 1 + 2/5 = 5/5 + 2/5 = 7/5.

Now, the expression becomes:

(13/3) × 5 + 2,4 : (-0,1) - (14/15) : (7/5)

Now, let's continue:

1. Calculate (13/3) × 5: (13/3) × 5 = (13/3) × (15/3) = (13 × 15) / (3 × 3) = 195/9 = 65/3.

2. Calculate 2,4 : (-0,1): 2.4 ÷ (-0.1) = -24.

3. Calculate (14/15) : (7/5): (14/15) ÷ (7/5) = (14/15) × (5/7) = (2/3) × (5/7) = (10/21).

Now, the expression is simplified to:

(65/3) - 24 - 10/21.

To subtract fractions, we need to have a common denominator:

1. Convert 24 to a fraction with a denominator of 3: 24 = 24/1.
2. Find a common denominator, which is 3.
3. Subtract the fractions:

(65/3) - (24/3) - (10/21)

Now, subtract the fractions:

(65 - 24)/3 - 10/21

41/3 - 10/21

To subtract these fractions, you need a common denominator. The least common denominator is 63:

(41/3) * (7/7) - (10/21) * (3/3)

(287/21) - (30/21)

Now, subtract the fractions:

(287 - 30)/21

257/21

So, the final result of the expression is:

257/21.