5x-(2x+1)/2 =3x+(15x-2)/4

解答

5 x - \frac{2 x + 1}{2} = 3 x + \frac{15 x - 2}{4}

x = 0

求解步骤

5 x - \frac{2 x + 1}{2} = 3 x + \frac{15 x - 2}{4}

乘以最小公倍数

20 x - 2 (2 x + 1) = 27 x - 2

乘开

- 2 (2 x + 1) : - 4 x - 2

20 x - 4 x - 2 = 27 x - 2

s im pl i f y 5^{l o g_{5} (7)}

- 8 < - 4 x + 4

3 (x - 4) = 9 - 2 x + 7

f a c t or a^{2} - 4 ab - 21 b^{2}

3 x^{2} - 16 x + 8 = 0