解方程x+2分之x+1-x+3分之x+2=x+6分之x+5-x+7分之x+6
解:通分,得到 (x+2)(x+3)=(x+6)(x+7)5x+6=13x+42 8x=-36 x=-9\/2
解方程:x+2\/x+1-x+3\/x+2=x+6\/x+5-x+7\/x+6
解:通分化简得到 (x+1)(x+2)=(x+5)(x+6)3x+2=11x+30 8x=-28 x=-7\/2
解方程:x+2分之x+1+x+7分之x+6=x+3分之x+2+x+6分之x+5
==>x\/2+x\/7+7 = (x\/3+x\/6)+7 ==>x\/7 = 0 ==>x=0
解方程x+2分之x+1+x+7分之x+6=x+3分之x+2+x+6分之x+5
x+1\/x+2 + x+6\/x+7=x+2\/x+3+ x+5\/x+6 1-1\/x+2 + 1- 1\/x+7=1-1\/x+3+ 1-1\/x+6 1\/x+2 + 1\/x+7=1\/x+3+ 1\/x+6 (x+7+x+2)\/(x+2)(x+7)=(x+6+x+3)\/(x+3)(x+6)(2x+9)(x+2)(x+7)=(2x+9)(x+3)(x+6)(2x+9)(x^2+7x+2x+14)=...
解方程:(x+1\/x+2)+(x+6\/x+7)=(x+2\/x+3)+(x+5\/x+6)
解:原方程化为1-1 x+2 +1- 1 x+7 =1- 1 x+3 - 1 x+6 = 1 x+2 - 1 x+3即1 (x+6)(x+7)= 1 (x+2)(x+3),所以(x+6)(x+7)=(x+2)(x+3).x=-9 2 .经检验x=-9 2 是方程的根
解方程 x+1分之x+2-x+2分之x+3=x+3分之x+4-x+4分之x+5
(x+2)\/(x+1)-(x+3)\/(x+2)=(x+4)\/(x+3)-(x+5)(x+4)左边=1+1\/(x+1)-1-1\/(x+2)=1\/(x+1)-1\/(x+2)=1\/(x+1)(x+2)右边=1+1\/(x+3)-1-1\/(x+4)=1\/(x+3)-1\/(x+4)=1\/(x+3)(x+4)1\/(x+1)(x+2)=1\/(x+3)(x+4)即(x+1)(x+2)=(x+3...
解方程x+1\/x+2+x+6\/x+7=x+2\/x+3+x+5\/x+6
x+1/x+2+x+6/x+7=x+2/x+3+x+5/x+6 1-1\/(x+2)+1-1\/(x+7)=1-1\/(x+3)+1-1\/(x+6)1\/(x+6)-1\/(x+7)=1\/(x+2)-1\/(x+3)1\/(x+6)(x+7)=1\/(x+2)(x+3)(x+6)(x+7)=(x+2)(x+3)13x+42=5x+6 8x=-36 x=-4.5 经检验x=-4.5是方程的...
x+1分之x+2减去x+3分之x+4=x+5分之x+6减去X+7分之x+8 (解方程)
x+1分之x+2减去x+3分之x+4=x+5分之x+6减去X+7分之x+8 方程两边分别通分,得 [(x+2)(x+3)-(x+1)(x+4)]\/[(x+1)(x+3)]=[(x+6)(x+7)-(x+8)(x+5)]\/[(x+5)(x+7)]2\/[(x+1)(x+3)]=2\/[(x+5)(x+7)]则(x+5)(x+7)=(x+1)(x+3)x²+12...
分式方程(x+1)\/(x+2)+(x+6)\/(x+7)=(x+2)\/(x+3)+(x+5)\/(x+
1-1\/(x+2)+1-1\/(x+7)=1-1\/(x+3)+1-1\/(x+6)即: 1\/(x+2)+1\/(x+7)=1\/(x+3)+1\/(x+6)通分: (2x+9)\/(x+2)(x+7)=(2x+9)\/(x+3)(x+6)得:2x+9=0, 或(x+2)(x+7)=(x+3)(x+6)前者得x=-4.5, 后者无解 经检验,x=-4.5为原方程的解。
解方程数学问题x+1\/x+2+x+2\/x+3=x+3\/x+4+x+4\/x+5
解:1-1\/﹙x+2﹚+1-1\/﹙x+3﹚=1-1\/﹙x+4﹚+1-1\/﹙x+5﹚1\/﹙x+2﹚+1\/﹙x+3﹚=1\/﹙x+4﹚+1\/﹙x+5﹚1\/﹙x+2﹚-1\/﹙x+4﹚=1\/﹙x+5﹚-1\/﹙x+3﹚2\/﹙x²+6x+8﹚=﹣2\/﹙x²+8x+15﹚x²+8x+15=﹣x²-6x-...