I. Решите уравнение: 1. 145 - (x + 45) = 50
2. (39 + x) - 27 = 22
3. 6x + 131 = 437
4. 490 - у • 7 = 350
5. k : 16 - 109 = 231
6. 8 • (x- 7) = 1080
7. (k + 11): 23 = 27
8. 900 : (210 +x) =36
9. 40 + x: 70 = 54 10.
67 - 36 : x = 55