Question

化简求值：已知【3x分之2-x+y分之2（3x分之x+y-x-y）】÷5x+3y=0？

Answer 1

5x=-3y
x=-3|5y
直接带进去得答案,
或者=23x-2|3x+2|x+y的和乘（x+y）除以x-y|x
=2乘xx-y
=2（-35y）（-35y-y）
=34
手机果然不行.,7,所求式子可以化简为2x/(x-y)——(1)
又5x+3y=0,知y=-5x/3
代入(1)知所求式子=2/(1+5/3)=3/4,2,问题是啥啊,1,[2/(3x)-2((x+y)/3x)-x-y)/(x+y)]÷(x-y)/x
=[2/(3x)-2((x+y)/3x)-(x+y))/(x+y)]÷(x-y)/x
=[2/(3x)-2(1/3x-1)]÷(x-y)/x
=[2/(3x)-2/(3x)+2]÷(x-y)/x
=2x/(x-y)
∵5x+3y=0
∴y=5x/3
∴2x/(x-y)=3/4,1,3/4,0,