Question

解方程组2(x+2)?3(y?1)＝13.32(x+2)+3(y?

解方程组2(x+2)?3(y?1)＝13.32(x+2)+3(y?1)＝30.7．

Answer 1

2(x+2)?3(y?1)＝13.3  ① 2(x+2)+3(y?1)＝30.7②

∵①+②得：4（x+2）=44，解得：x=9，
②-①得：6（y-1）=17.4，解得：y=3.9，
∴原方程组的解是：

x＝9 y＝3.9

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