2/3:1 1/9=0,6:x
2/27=3/5*1/x
2/27=3/5x
10x=81
x=81/10
x=8 1/10
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2/3:1 1/9=0,6:x
2/27=3/5*1/x
2/27=3/5x
10x=81
x=81/10
x=8 1/10