mallorytaylor279
30.10.2019 •
Mathematics
Solving rational equations. lcd method. show work.
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Ответ:
a = 5
Step-by-step explanation:
LCD: ( a+b)(a-b)
so
(2a-3)(a+3) - 2(a+3)(a-3) = 12(a-3)
2a^2 + 6a - 3a - 9 -2a^2 + 18 = 12a - 36
3a + 9 = 12a - 36
3a - 12a = -36 - 9
-9a = -45
a = 5
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Ответ: