20+0.8x=x-14 112-4x=2x(80-4x)
(x-22)+(x-24)+(x-27)+(x-20)=x
(x+2005)/ (x+2004)+(x+2007)/(x+2006)=(x+2008)/(x+2007)+(x+20
(X+X)+(X-X)+(X*X)+(X/X)=100
x-0.8x=16 x=?
0.88(X+20%X)=X+84
6x+150%x=9 18-20%x=8 x-25%=0.8
x-4x=102 x-0.8x=22
(20-2x)(20-2x)x>400 x=?
(X+X*20%)-[(1200-X)-(1200-X)*20%]=40%
X+X*20%-(1200-X)-(1200-X)*20%=40%
x-0.8x=46