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vladanazarova
@vladanazarova
August 2021
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dnepr1
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3)
Приводим к общему знаменателю 20 и приравниваем числители дробей:
12х+20+45х-25 = 120+30х+10
Отсюда 27х= 135
х = 5.
4) Аналогично - общий знаменатель 8:
5-9х-6-10х = 20-12х
-7х = 21
х = -3.
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Answers & Comments
Verified answer
3)Приводим к общему знаменателю 20 и приравниваем числители дробей:
12х+20+45х-25 = 120+30х+10
Отсюда 27х= 135
х = 5.
4) Аналогично - общий знаменатель 8:
5-9х-6-10х = 20-12х
-7х = 21
х = -3.