X/(X+350)=20%
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X/(X+350)=20%X/(X+350)=20%X/(X+350)=20%X/(X+350)=20%x+350=5x5x-x=3504x=350x=87.5X/(X+350)=20%X/(X+35
X/(X+350)=20%
X/(X+350)=20%
X/(X+350)=20%
X/(X+350)=20%
x+350=5x
5x-x=350
4x=350
x=87.5
X/(X+350)=20%
X/(X+350)=1/5
5x=x+350
4x=350
x=87.5
X/(X+350)=20%
(X+X)+(X-X)+(X*X)+(X/X)=100
x-20%x=45+20%x
x+x²=20,x=?
x - 15%x+20%x=23.
x-0.3x-0.5x=20
0.88(X+20%X)=X+84
X-30%X+8-X=20
x*x*(1/4)=20x
x(x-20)=x+10
30%x=50%x-20x
X+350/X=39
20%x+20%x×30%x-20%x=4.5
(x+20)+x=60+x-(x+20)
(X+X*20%)-[(1200-X)-(1200-X)*20%]=40%
X+X*20%-(1200-X)-(1200-X)*20%=40%
(20-2x)(20-2x)x>400 x=?
50%x+x=20 x+30%x=52