2/5:x=4/5:60 0.2/6.3=X/5 0.6:x=15:1 12:14=X :1/6

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2/5:x=4/5:600.2/6.3=X/50.6:x=15:112:14=X:1/62/5:x=4/5:600.2/6.3=X/50.6:x=15:112:14=X:1/62/5:x=4/5:60

2/5:x=4/5:60 0.2/6.3=X/5 0.6:x=15:1 12:14=X :1/6
2/5:x=4/5:60 0.2/6.3=X/5 0.6:x=15:1 12:14=X :1/6

2/5:x=4/5:60 0.2/6.3=X/5 0.6:x=15:1 12:14=X :1/6
(1)
5/2:x=5/4:60
(5/2)/x=(5/4)/60
(5/4)x=(5/2)60
x=120
(2)
6.3/0.2=x/5
x =(6.3/0.2)5
= 6.3
(3)
0.6:x=15:1
0.6/x = 15/1
x=0.6/15
=1/25
(4)
12:14=x:6/1
12/14=(x/6)/1
x = 36/7

(4/x-5)+(x-3)/(12-x)=(x-45)/(x^2-17x+60) x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? (x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) x-2x+3x-4x+5x.+99x-100x=25求解 2x+3x+4x+5x+x+6x+7x=100 x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? 写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4 x+2/3x=60 x-3/5x=120 4x+18x=1x+2/3x=60 x-3/5x=120 4x+18x=132! x+3分之2 x=60 x-5分之3x=120 4x+18x=132x+3分之2 x=60 x-5分之3x=120 4x+18x=132 解方程:4/x-5+ x-5/12-x=x-33/x^2-17x+60thx``````` x+2/3x=60 x-2/5x=120 4x+18x=132 x*x-(x-2)*(x-5)=60 x+3/20x=46 ,x-1/5x=40 ,x-1/2x=3/4 ,x-0.2x=18解方程解方程；x/x-4=5x/x-2 x-8/x-4=2-x-5/x-7 (X-5)(X+3)+(X-2)(X+4)=26