Question

Найди неизвестное... (370+440)-?=590. (263+?)-170=539. (?+452)-128=647 ?-(280+360)=590 754-(227+?)=340 835-(?+490)=217 Пожалуйста помогите............

Answer 1

1)220
2)446
3)323
4)1230
5)187
6)128

Answer 2

Solving the Equations

To solve the given set of equations, let's denote the unknown values as x, y, and z. We'll solve for these variables using the given equations.

1. (370 + 440) - x = 590 2. (263 + y) - 170 = 539 3. (z + 452) - 128 = 647 4. z - (280 + 360) = 590 5. 754 - (227 + x) = 340 6. 835 - (y + 490) = 217

Solution

1. (370 + 440) - x = 590 - The sum of 370 and 440 is 810. So, the equation becomes: 810 - x = 590. - Solving for x, we get: x = 810 - 590 = 220 .

2. (263 + y) - 170 = 539 - The sum of 263 and y is 263 + y. So, the equation becomes: 263 + y - 170 = 539. - Solving for y, we get: y = 539 + 170 - 263 = 446 .

3. (z + 452) - 128 = 647 - The sum of z and 452 is z + 452. So, the equation becomes: z + 452 - 128 = 647. - Solving for z, we get: z = 647 + 128 - 452 = 323 .

4. z - (280 + 360) = 590 - The sum of 280 and 360 is 640. So, the equation becomes: z - 640 = 590. - Solving for z, we get: z = 590 + 640 = 1230 .

5. 754 - (227 + x) = 340 - The sum of 227 and x is 227 + x. So, the equation becomes: 754 - (227 + x) = 340. - Solving for x, we get: x = 754 - 340 + 227 = 641 .

6. 835 - (y + 490) = 217 - The sum of y and 490 is y + 490. So, the equation becomes: 835 - (y + 490) = 217. - Solving for y, we get: y = 835 - 217 + 490 = 1108 .

Conclusion

The solutions to the given equations are: - x = 220 - y = 446 - z = 323

Therefore, the values of the unknowns x, y, and z are 220, 446, and 323, respectively.