The given expressions can be interpreted as a series of ratios.
1) 2:4 can be simplified to 1:2, which means the ratio of 2 to 4 is equivalent to the ratio of 1 to 2. 2) 6:10 simplifies to 3:5. 3) 10:12 simplifies to 5:6. 4) 10:18 simplifies to 5:9. 5) 20:6 simplifies to 10:3.
Therefore, the series of ratios is: 1:2, 3:5, 5:6, 5:9, 10:3
And the final expression, -2:18 simplifies to -1:9.
The given expressions can be interpreted as a series of ratios.
1) 2:4 can be simplified to 1:2, which means the ratio of 2 to 4 is equivalent to the ratio of 1 to 2.
2) 6:10 simplifies to 3:5.
3) 10:12 simplifies to 5:6.
4) 10:18 simplifies to 5:9.
5) 20:6 simplifies to 10:3.
Therefore, the series of ratios is:
1:2, 3:5, 5:6, 5:9, 10:3
And the final expression, -2:18 simplifies to -1:9.