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受欢迎的代数 >

(x+m)/n-(x-n)/m =2

解答

\frac{x + m}{n} - \frac{x - n}{m} = 2

解答

x = n - m; mn \neq = 0, m \neq = n

求解步骤

\frac{x + m}{n} - \frac{x - n}{m} = 2

乘以最小公倍数

m (x + m) - n (x - n) = 2 mn; mn \neq = 0

乘开

m (x + m) : m x + m^{2}

m x + m^{2} - n (x - n) = 2 mn

乘开

- n (x - n) : - n x + n^{2}

m x + m^{2} - n x + n^{2} = 2 mn; mn \neq = 0

将

m^{2}

到右边

m x - n x + n^{2} = 2 mn - m^{2}; mn \neq = 0

将

n^{2}

到右边

m x - n x = 2 mn - m^{2} - n^{2}; mn \neq = 0

分解

m x - n x : x (m - n)

x (m - n) = 2 mn - m^{2} - n^{2}; mn \neq = 0

两边除以

m - n; mn \neq = 0, m \neq = n

x = n - m; mn \neq = 0, m \neq = n

作图

流行的例子

solvefor r,19x+rx=-37x+w

so l v e f or r, 19 x + r x = - 37 x + w

6 x + 2 = 0

0.1(y+2)=4(0.2y-0.3)

0.1 (y + 2) = 4 (0.2 y - 0.3)

2 x + 4 = - (- 7 x + 6)

solvefor x,x+3y=-15

so l v e f or x, x + 3 y = - 15