x+(3x-9)/5 =4-(5x-12)/3

解答

x + \frac{3 x - 9}{5} = 4 - \frac{5 x - 12}{3}

x = 3

求解步骤

x + \frac{3 x - 9}{5} = 4 - \frac{5 x - 12}{3}

乘以最小公倍数

15 x + 3 (3 x - 9) = 60 - 5 (5 x - 12)

乘开

3 (3 x - 9) : 9 x - 27

15 x + 9 x - 27 = 60 - 5 (5 x - 12)

i z - 3 z = - 4 i

(2 x - 4) (\frac{7}{2}) + 7 x = - \frac{14}{8} x + \frac{28}{8} x

3 a - 1 = 20

a + (- 1.3) = - 4.5

(x - 5) + 6 (2 x - 1) = 2 x + 3