(6-X)/(8-X)=3/5

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(6-X)/(8-X)=3/5(6-X)/(8-X)=3/5(6-X)/(8-X)=3/5(6-X)/(8-X)=3/5交叉相乘得:3(8-x)=5(6-x)24-3x=30-5x2x=6x=3

(6-X)/(8-X)=3/5
(6-X)/(8-X)=3/5

(6-X)/(8-X)=3/5
(6-X)/(8-X)=3/5
交叉相乘得:
3(8-x)=5(6-x)
24-3x=30-5x
2x=6
x=3

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