雞x
兔100-x
4（100-x）-70=2x
400-4x-70=2x
330=6x
x=55
雞55
兔45
100只雞兔同籠,雞的腳印比兔的腳少70只,雞兔各有多少只.
100只雞兔同籠,雞的腳印比兔的腳少70只,雞兔各有多少只.
數(shù)學(xué)人氣：762 ℃時(shí)間：2019-08-23 10:13:12
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