展开 24(x-(x+2}{12}=\frac{5x)/2)

解答

展开

24 (x - \frac{x + 2}{12} = \frac{5 x}{2})

22 x - 4 = \frac{5 x}{2}

求解步骤

24 (x - \frac{x + 2}{12} = \frac{5 x}{2})

= 24 (x - = \frac{x + 2}{12} \cdot \frac{5 x}{2})

使用分配律:

a (b - c) = ab - a c

a = 24, b = x, c = \frac{x + 2}{12} = \frac{5 x}{2}

24 x - 24 \cdot \frac{x + 2}{12} = \frac{5 x}{2}

乘开

24 x - 24 \cdot \frac{x + 2}{12} : 22 x - 4

22 x - 4 = \frac{5 x}{2}

e x p an d \frac{1}{y ^{2} ( 1 - y )}

e x p an d - \frac{s ^{2} - 4 s - 1}{( s - 4 ) ( s - 2 )}

e x p an d \frac{1}{( s + 1 ) ( s ^{2} + 4 - 2 s )}

e x p an d \frac{( X - 11 ) ^{2}}{2}

e x p an d - \frac{2 ( 3 + 2 3 )}{3}