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以下八题,均可通过列出一元一次方程(组)获解. 例1 已知一元一次方程1/5x(3m)+2=7,求m的值. 解 由一元一次方程的定义,得 3m+2=1,解得m=-1/3. 例2 已知x=2是关于x的方程 (x-1)/3+k=k(x+2)
The following eight questions can be solved by listing the unary equation (group). Example 1 It is known that the unary equation 1/5x(3m)+2=7 finds the value of m. The solution is defined by a one-dimensional equation. 3m+2=1, the solution is m=-1/3. Example 2 It is known that x=2 is the equation about x (x-1)/3+k=k(x+2)