1.2 = 3.6
2 = 3 * 1.2
2 = 3.6 / 1.2
2 = 3
2. 3.2 : x = 9 : 5
(3.2 / x) = (9 / 5)
9x = 16
x = 16/9
3.2 : x = 21 : 8
(3.2 / x) = (21 / 8)
21x = 25.6
x = 25.6/21
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Answers & Comments
1.2 = 3.6
2 = 3 * 1.2
2 = 3.6 / 1.2
2 = 3
2. 3.2 : x = 9 : 5
(3.2 / x) = (9 / 5)
9x = 16
x = 16/9
3.2 : x = 21 : 8
(3.2 / x) = (21 / 8)
21x = 25.6
x = 25.6/21