Решите уравнения А) 5(х+2)+3(х-8)=10 Б)(2х+1) (х-3)=Х(3+2х). Created by rinata2003. algebra-ru

Решите уравнения А) 5(х+2)+3(х-8)=10 Б)(2х+1) (х-3)=Х(3+2х)...

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A) 5(x+2)+3(x-8)=10
5x+10+3x-24=10
8x-14=10
8x=10+14
8x=24
x=3
Ответ: 3.

б) (2x+1)(x-3)=x(3+2x)
2x²+x-6x-3=3x+2x²
2x²-5x-3=3x+2x²
2x²-2x²-5x-3x=3
-8x=3
x= - 3/8
Ответ : - 3/8

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rinata2003 спасибо большое

22561 А) 5х+10+3х-24=10.
5х+3х=10-10+24.
8х=24
х=24:8
х=3

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