有限数学 示例

使用增广矩阵求解 x=z+8 , y=90-2z
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解题步骤 1
Move variables to the left and constant terms to the right.
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解题步骤 1.1
从等式两边同时减去
解题步骤 1.2
在等式两边都加上
解题步骤 2
Write the system as a matrix.
解题步骤 3
Use the result matrix to declare the final solution to the system of equations.
解题步骤 4
The solution is the set of ordered pairs that make the system true.