решите уравнения:а) 8-5(2х-3)=13-6хб) х²+7х-18=0в)5х+4/2+3=9х/4. Created by RinaAndreeva. algebra-ru

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August 2022 1 4 Report

решите уравнения:
а) 8-5(2х-3)=13-6х
б) х²+7х-18=0
в)5х+4/2+3=9х/4

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Айнур8А А)8-5(2х-3)=13-6х
8-10х+15=13-6х
-10х+6х= 13-8-15
-4х=-10
х=2.5
б) х²+7х-18=0
x²+7x=18
x(x-7)=18
x=18 x-7=18
x= 18+7
x=25
в)5х+4/2+3=9х/4
20x+8+12=9x
20x-9x = -8-12
11x= -20
x≈-1.8

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v pryamougolnom treugolnike s katetom 6 i gipotenuzoj 10 najdite vysotu provedyo

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RinaAndreeva July 2022 | 0 Ответы

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v pryamougolnom treugolnike s katetom 6 i gipotenuzoj 10 najdite vysotu provedyo

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