Equivalent ratios
Integers
100

1:2=

4:8

100

-10x(10)=

-100

200

3:5=

12:20

200

5x(-5)=

-25

300

9:4=

18:8

300

6x6=

36

400
7:3=

14:6

400

12x(-2)

-24

500

2:3=

4:6

500

15x(-2)

-30

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