5分之8x+4-7分之11x+1=1
人气:479 ℃ 时间:2020-01-09 05:24:05
解答
5分之(8x+4)-7分之(11x+1)=1
7(8x+4)-5(11x+1)=35
56x+28-55x-5=35
56x-55x=12
x=12
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