知识问答
最佳答案:x- 5/6 +4/7 = 2/3x + 4/7 = 2/3 + 5/6x + 4/7 = 3/2x = 3/2 - 4/7x= 13/14【秋风燕燕为您答题
最佳答案:5/6x-2x=5/6 两边乘65x-12x=5-7x=5x=-7/518/11-(7/11+3/8)=(18/11-7/11)-3/8=1-3/8=5/81