1/4x+2/5x+2/5x+10+20=x
1个回答
1/4x+2/5x+2/5x+10+20=x
x/4+4x/5+30=x
x-x/4-4x/5=30
-x/20=30
x=-600
相关问题
解方程:(1)4(2x+3)=8(1-x)-5(x-2);(2)x?10.3?x+20.5=1.2.
(1-2x)/5-1≤(x+2)/2-(4-5x)/10
(100-2x-10x)/5=20-2x-2/5*x
4*(x-2)-5*(1-2x)=4-20x
4*(x-2)-5*(1-2x)=4-20x
1/5(x+10)+4/5x=2x-4
x+1/10-x-1/5=1 x/12-2x-1/20=3x+4/8-
2.X(2X-5)=4X-10 2X^2-9X+10=0 (2X-5)(X-2)=0 X1=2.5,X2=2
观察下列单项式:1/2x,-2/3x^2,3/4x^3,-4/5x^4,5/6x^5,…,19/20x^19,-20/2
解方程: x+3.2=10.83 x÷13=20 9x-36=5x 2.5×3-2x=0.5 4(2-x)=1 x÷1.