Question 112025_深圳中考11.计算:$\dfrac{a^2}{a+1} - \dfrac{1}{a+1} =$ _________.查看答案解析答案a-1Explanation【答案】a-1
Question 32025_深圳中考3.某校进行《九章算术》,《周髀算经》,《孙子算经》,《算法统宗》四本书的长文本阅读活动,小聪从中任取一本,恰好抽到《九章算术》的概率为( )A. $\dfrac{1}{2}$B. $\dfrac{1}{3}$C. $\dfrac{1}{4}$D. $\dfrac{2}{3}$查看答案解析答案CExplanation【答案】C
Question 72025_深圳中考7.某社区植树60棵,实际种植人数是原计划人数的2倍,实际平均每人种植棵树比原计划少了3棵.若设原计划人数为 $x$ 人,则下列方程正确的是( )A$\frac{60}{x}-\frac{60}{2x}=3$B$\frac{60}{2x}-\frac{60}{x}=3$C$\frac{60}{x}=2\times\frac{60}{x+3}$D$\frac{60}{x}=2\times\frac{60}{x-3}$查看答案解析答案AExplanation【答案】A