计算x+3分之x-2÷(x-3+x+3分之5)_数学解答

计算x+3分之x-2÷(x-3+x+3分之5)

人气：303 ℃　时间：2020-04-17 16:03:52

解答

(x-2)/(x+3)÷[x-3+5/(x+3)]
=(x-2)/(x+3)÷[(x-3)(x+3)+5]/(x+3)
=(x-2)/(x+3)÷[(x²-9+5)/(x+3)]
=(x-2)/(x+3)÷[(x+2)(x-2)/(x+3)]
=1÷(x+2)
=1/(x+2)