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受欢迎的代数 >

(4h-(21-8h))/3 =(15+6(h-1))/2

解答

\frac{4 h - ( 21 - 8 h )}{3} = \frac{15 + 6 ( h - 1 )}{2}

解答

h = \frac{23}{2}

+1

十进制

h = 11.5

求解步骤

\frac{4 h - ( 21 - 8 h )}{3} = \frac{15 + 6 ( h - 1 )}{2}

使用分式交叉相乘: 若

\frac{a}{b} = \frac{c}{d}

则

a \cdot d = b \cdot c

(4 h - (21 - 8 h)) \cdot 2 = 3 (15 + 6 (h - 1))

化简

2 (12 h - 21) = 3 (6 h + 9)

展开

2 (12 h - 21) : 24 h - 42

展开

3 (6 h + 9) : 18 h + 27

24 h - 42 = 18 h + 27

将

42

到右边

24 h = 18 h + 69

将

18 h

para o lado esquerdo

6 h = 69

两边除以

6

h = \frac{23}{2}

作图

流行的例子

x/2+x/3-1= x/6+3

\frac{x}{2} + \frac{x}{3} - 1 = \frac{x}{6} + 3

因式分解 11x-xy+11y-x^2

f a c t or 11 x - x y + 11 y - x^{2}

(x+3)/(x-1)>= 0

\frac{x + 3}{x - 1} \geq 0

z^{2} - 5 z + 7 = 0

\frac{p}{8} < 2