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МатематикаВопрос:
16. 6.4(1 - 0.5a) = -2(3 + 2a)
Ответ:
6.4 - 3.2a = -6 - 4a
4a - 3.2a = -6 - 6.4
0.8a = -12.4
a = -15.5
Похожие
- 5x + 4 = x + 12
- 13 - 5y = 8 - 2y
- 5x + (3x - 7) = 9
- 3y - (5 - y) = 11
- (7a + 1) - (6a + 3) = 5
- 8s + 11 - 13 = 9s - 5
- (5x - 3) + (7x - 4) = 8 - (15 - 11x)
- (7 - 5k) - (8 - 4k) + (5k + 6) = 8
- 2x + 5 = 2(x + 1) + 11
- 15(v + 2) - 30 = 15v
- 5(3x + 1.2) + x = 6.8
- 0.4b + 3 = 0.2(3b + 1) - b
- 5(x - 1) = 9.4 - 1.7x
- 3.5 - 9a = 2(0.5a - 4)
- 3(2.4 - 1.1m) = 2.7m + 3.2
- 3(x - 1) = 2(2 - x) + 6
- 4(3 - h) - 11 = 7(2h - 5)
- -3(3y + 4) + 4(2y - 1) = 0
- 3(5x - 7) = 3(0.2x + 3.2)
- 1. 8x - 5 = x - 40
- 2. 9 + 13y = 35 + 26y
- 3. 6s + (3s - 2) = 14
- 4. 8y - (7y - 142) = 51
- 5. (6x + 1) - (3 - 2x) = 14
- 6. (6 - 2c) + 4 = -5c - 3
- 7. (10x - 3) + (14x - 4) = 8 - (15 - 22x)
- 8. (7 - 10k) - (8 - 8k) + (10k + 6) = -8
- 9. 6y - 20 = 2(5y - 10) - 4y
- 10. 6(1 + 5v) = 5(1 + 6v)
- 11. 4(x + 3.6) = 3x - 1.4
- 12. 3.4 - 0.6b = 2b - (0.4b + 1)
- 13. -3(y + 2.5) = 6.9 - 4.2y
- 14. 0.5y + 7 = 5(0.2 + 1.5y)
- 15. 5(x - 0.8) = 3.8x - 5.8
- 17. 2(n - 3) = 8 - 7(x + 2)
- 18. 3x + 2(2x - 3) = 8 - 7(x + 2)
- 19. 0.7(5z - 3) = 5(0.1 + 0.5z)
- 20. 4(3 - 2x) + 24 = 2(3 + 2x)
