((3x+8))/(16)-(((12x-6))/((15-30)))+x/3 =((7x))/(12)-(((2x+16))/(32))

解答

\frac{( 3 x + 8 )}{16} - (\frac{( 12 x - 6 )}{( 15 - 30 )}) + \frac{x}{3} = \frac{( 7 x )}{12} - (\frac{( 2 x + 16 )}{32})

x = - \frac{3}{4}

十进制

x = - 0.75

求解步骤

\frac{( 3 x + 8 )}{16} - (\frac{( 12 x - 6 )}{( 15 - 30 )}) + \frac{x}{3} = \frac{( 7 x )}{12} - (\frac{( 2 x + 16 )}{32})

化简

\frac{3 x + 8}{16} - (\frac{12 x - 6}{15 - 30}) + \frac{x}{3} : \frac{3 x + 8}{16} + \frac{12 x - 6}{15} + \frac{x}{3}

\frac{3 x + 8}{16} + \frac{12 x - 6}{15} + \frac{x}{3} = \frac{7 x}{12} - \frac{2 x + 16}{32}

乘以最小公倍数

30 (3 x + 8) + 192 (2 x - 1) + 160 x = 280 x - 30 (x + 8)

乘开

- 30 (x + 8) : - 30 x - 240

634 x + 48 = 280 x - 30 x - 240

(\frac{31}{7} - \frac{13}{14}) \cdot x = \frac{12}{7}

so l v e f or x, p = 3 x + 3 x + 5 gx + 2

p (- 1) = 0

3 (2 x - 3) + 2 (2 - x) = - 3

so l v e f or y, x = 1 + y - 2 y