(1)7(X+6)-3X=4(2X+5)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
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)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
3/x-1=4/x 6/x+1=x+5/x(x+1)
6/(x+1)=(x+5)/[x(x+1)] (3-x)/(x-4)+1/(4-x)=1 2/(1+x)-3/(1-x)
5x-3(2x+1)=6x-4(5-3x)求x
X-(X/2)+(X/3)-(X/4)+(X/5)-(X/6)=1
方程 3x(7-2x)+5x(2x-1)=4x(x-3)+56
初一数学x*x+2x+5的值为7,请求3x*x+6x+3的值.因为x*x+2x2x+3=3x(x*x+2x)+2x+2x
化简(-2x^2)+3x+2)-3(7x^2-5x-1)-(4x^2-x+6)
有一道题目"x=100时,求多项式(8-7x-6x平方+x立方)+(x立方+5x平方+4x-1)-(-x平方-3x+2x
(1)6+2(x-3)=X (2)8-2(x-7)=x-(x-4) (3)2x-(1.5x-1)=2(1.5x-1)