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受欢迎的代数 >

solvefor x,(ax+b)/(cx+d)=4

解答

求解

x, \frac{a x + b}{c x + d} = 4

解答

x = \frac{4 d - b}{a - 4 c}; a \neq = 4 c

求解步骤

\frac{a x + b}{c x + d} = 4

在两边乘以

c x + d

a x + b = 4 (c x + d)

展开

4 (c x + d) : 4 c x + 4 d

a x + b = 4 c x + 4 d

将

b

到右边

a x = 4 c x + 4 d - b

将

4 c x

para o lado esquerdo

a x - 4 c x = 4 d - b

分解

a x - 4 c x : x (a - 4 c)

x (a - 4 c) = 4 d - b

两边除以

a - 4 c; a \neq = 4 c

x = \frac{4 d - b}{a - 4 c}; a \neq = 4 c

作图

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