Question

2/3*5/7 -3/14:(-4 1/2)-2 целых 2/3 решите пожалуйста

Answer 1

2/3*5/7+3/14*2/9-2=10/21+2/21-2=12/21-2=-1 9/21=-1 3/7

Answer 2

Calculation of the Expression

To solve the expression 2/3 * 5/7 - 3/14 : (-4 + 1/2) - 2 + 2/3, we need to follow the order of operations (PEMDAS/BODMAS).

1. First, we simplify the expression inside the parentheses: (-4 + 1/2).

- The sum of -4 and 1/2 is -3.5.

2. Next, we calculate the division: 3/14 : -3.5.

- Dividing 3/14 by -3.5 gives us -0.21428571428571427.

3. Now, we perform the multiplication: 2/3 * 5/7.

- Multiplying 2/3 by 5/7 gives us 0.47619047619047616.

4. Finally, we add and subtract the remaining numbers: 0.47619047619047616 - 0.21428571428571427 - 2 + 2/3.

- Subtracting 0.21428571428571427 from 0.47619047619047616 gives us 0.2619047619047619. - Subtracting 2 from 0.2619047619047619 gives us -1.7380952380952381. - Adding 2/3 to -1.7380952380952381 gives us -1.4047619047619047.

Therefore, the solution to the expression 2/3 * 5/7 - 3/14 : (-4 + 1/2) - 2 + 2/3 is approximately -1.4047619047619047.

Calculation Steps:

1. (-4 + 1/2) = -3.52. 3/14 : -3.5 = -0.214285714285714273. 2/3 * 5/7 = 0.476190476190476164. 0.47619047619047616 - 0.21428571428571427 = 0.26190476190476195. 0.2619047619047619 - 2 = -1.73809523809523816. -1.7380952380952381 + 2/3 = -1.4047619047619047 Therefore, the solution to the expression 2/3 * 5/7 - 3/14 : (-4 + 1/2) - 2 + 2/3 is approximately -1.4047619047619047.