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五年级分数解方程怎么做?如:2/1+X=6/5 减法的都有

1/2+x=5/6 x=5/6-1/2 = 1/3

X-1/6=2/5解方程 解:原方程即: x=1/6+2/5 x=5/30+12/30 x=17/30 把x=17/30代入原方程检验, 17/30-1/6 =17/30-5/30 =12/30 =3/5

1/2+x=5/6 x=5/6-1/2 x=2/6 x=1/3

X=5/6-1/2 X=5/6-3/6 X=2/6 X=1/3

4/9+x=1 x-3/4=5/6 x+1/6=4/3 3/4+x=7/8 x-(1/2+1/3)=1/6 x-1/3+2/3=2 x-2=5/6 x+4/5=1 x-1/4=1/3 (0.5+x)+x=9.8÷2 2(X+X+0.5)=9.8 25000+x=6x 3200=450+5X+X X-0.8X=6 12x-8x=4.8 7.5*2X=15 1.2x=81.6 x+5.6=9.4 x-0.7x=3.6 91÷x =1.3 X+8.3=1...

x=5/6-1/2 x=5/6-3/6 x=2/6 x=1/3

x-6分之5等于1 解:x=1+5/6 x=1又5/6 9分之5+x=5分之3 解:x=3/5-5/9 x=27/45-25/45 x=2/45

2(x+1)/3=5(x+1)/6-1 2[2(x+1)]=5(x+1)-6 4x+4=5x+5-6 4-5+6=5x-4x 5=x x=5

移项,化简,有1/x=-2/3,有x=-3/2

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