0.5X+0.5X=6.5
解一元一次方程:0.5x-0.7x=6.5-1.3x
0.5x-0.7=-1.3x+6.5
0.5x-0.7=6.5-1.3x
4X+0.5X=13.5X
x+0.5x=30
先化简再求值先化简再求值:(x-x/x+1)(x+1/x^2+4x+4)(x^2-4/x^2-2x),其中x=-0.5
6X-(360X-0.5X)=2×(360X-0.5X)
(X-4)(x-2)-2(X-1)(X+3)其中X=-0.5
5/12x-x/4=1/3 0.5x-0.7=6.5-1.3x 3(x-7)+5(x-4)=15 (y-1)/2=2-(
0.5x+(5x+20)*0.5=298 x
0.5(500-x)-0.5x=237.5x怎样解?
8x-0.5x=0.5x-21怎么算