【考点】二元一次方程组
【难度系数】★★★☆☆
【答案评析】代数消元法即可,1式2式相加,可得13x=13,得出x=1,带入2式,得y=1/3, 故x-y=2/3.
答案选B
| SAT数学考试知识点解析汇总 | |
【考点】二元一次方程组
【难度系数】★★★☆☆
【答案评析】代数消元法即可,1式2式相加,可得13x=13,得出x=1,带入2式,得y=1/3, 故x-y=2/3.
答案选B
| SAT数学考试知识点解析汇总 | |
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