방정식 3.5 (X + 7) = 25.

방정식 3.5 (X + 7) = 25.

3.5x + 24.5 = 25.9
3.5x = 25.9 - 24.5
3.5x = 1.4
x = 0.4

해 인 식 방정식: x - 4 / x - 5 + x - 8 / x - 9 = x - 7 / x - 8 + x - 5 / x - 6

(x - 4) / (x - 5) + (x - 8) / (x - 9) = (x - 7) / (x - 8) + (x - 5) / (x - 6)
1 + 1 / (x - 5) + 1 + 1 / (x - 9) = 1 + 1 / (x - 8) + 1 + 1 / (x - 6)
1 / (x - 5) + 1 / (x - 9) = 1 / (x - 8) + 1 / (x - 6)
(2x - 14) / [(x - 5) (x - 9)] = (2x - 14) / [(x - 8) (x - 6)]
x ≠ 7 시
(x - 5) (x - 9) = (x - 8) (x - 6)
- 14x + 45 = - 14x + 48
45 = 48
∵ 45 ≠ 48
∴ x = 7