Simplification ratio: 84:162 =? Ratio: 1 / 2: 1 / 8 =? 3 / 4: 7 / 12 =? 1 / 5: 1 / 20 =?

84:162=2x2x3x7:2x3x3x9=2x7:3x9=14:27
1:2:1:8 = 8x2:1:8x8:1 = 4:1
3:4:7:12 = 12x4:3:12x12:7 = 9:7
1:5:1:20 = 20x5:20x20:1 = 4:1

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