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МатематикаВопрос:
18. 6-5(4x-1) = 3.
Ответ:
6 - 20x + 5 = 3
11 - 20x = 3
-20x = -8
x = 8/20 = 2/5
11 - 20x = 3
-20x = -8
x = 8/20 = 2/5
Похожие
- 1. 1-2(5+3x) = 15.
- 2. 8-5(8+3x) = 13.
- 3. 2-3(7+2x) = 11.
- 4. 2-3(2+3x) = 14.
- 5. x - 2(3x+2) = 16.
- 6. 3x-2(3x+4) = 10.
- 7. 1-4(5+2x) = 13
- 8. 2x-3(3x+1) = 11.
- 9. 3x-2(3x-2) = 19.
- 10. -4x = 15-3(3x-5)
- 11. -7x = 13-2(8x-7).
- 12. -5x = 11-2(4x-2).
- 13. 7-3(5x-3) = -11x.
- 14. 16-7(5-x) = 9.
- 15. 13-6(3-x) = 25.
- 16. 12-8(4-x) = 4.
- 17. 15-4(7-x) = 11.
- 19. 6 = 8-5(7x-1).
- 20. 4 = 7-6(5x-1).
- 21. 5 = 12-5(4x-1).
- 22. x-2(3x+2) = 16.
- 23. 7x-15 = 4x-3(x-3).
- 24. (4x-6)-(9x-4) = 18.
- 25. x-5(x+3) = 5.
- 26. 3(5x+8)-7x = 6x.
- 27. 6x-8 = 5x-3(x-4).
