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在近几年来的各地中考题中,出现了不少含有字母已知数的应用题,此类题的已知条件少,未知量多。解决时往往需要设辅助未知数,把握住基本的不同性质的量的关系式,找出合适的相等关系,通过代入消元或计算中消元,消去字母已知数和未知数解出问题答案. 例1 某企业有九个生产车间,现在每个车间原有的成品一样多,每个车间每天生
In the examination questions in various places in recent years, there have been a number of applications with known numbers of letters. The known conditions of such questions are few, and there are many unknowns. When solving, it is often necessary to set up auxiliary unknowns, grasp basic relational quantities of different natures, and find suitable equal relations. Either substitute into the elimination element or calculate the elimination element to eliminate the known number of letters and the unknown number to solve the problem. 1 A company has nine production workshops. Now each workshop has as many original products as each workshop is produced every day.