3а - 12b 3 * (a - 4 b) a - 4b
------------ = ------------------- = -----------------
6ab 6 * ab 2ab
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15b - 10c 5 * (3b - 2c) 3b - 2c
-------------- = ---------------------- = ------------------
10b 10 * b 2b
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2a + 4 2 * (a + 2)
----------- = ------------------ = 2/3
3(a + 2) 3 * (a + 2)
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5ху + 15х 5х * (у + 3)
--------------- = ------------------- = 5х / 6
6у + 18 6 * (у + 3)
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10a - 10b 10 * (a - b) 2 * (a - b) 2(a - b) 2(a - b)
--------------- = ------------------ = --------------- = -------------- = -------------- = - 2/3
15b - 15a 15 * (b - a) 3 * (b - a) 3(-a + b) -3(a - b)
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12а² + 8ab 4a * (3a + 2b)
---------------- = ---------------------- = 4a/b = 4 * 0,5 / 0,2 = 2/0,2 =10
3ab + 2b² b * (3a + 2b)
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х² - 6ху + 9у² (х - 3у)² х - 3у 1,5 - 3 * (- 0,5) 1,5 + 1,5
--------------------- = ------------------ = ----------- = ----------------------- = ---------------=
2х² - 6ху 2х * (х - 3у) 2х 2 * 1,5 3
= 3/3 = 1