1. x=8b 2x-x+3b-3b=8b
2. x^2 -(x+c)-(x^2-2x-3c)=0
x^2-x-c-x^2+2x+3c=0
x+2c=0
x= -2c
3. (6х-4n)-(2х^2+х)+(2х^2-n)=0.
6x-4n -x-n=0
5x-3n=0
5x=3n
x=3n/5
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Answers & Comments
1. x=8b 2x-x+3b-3b=8b
2. x^2 -(x+c)-(x^2-2x-3c)=0
x^2-x-c-x^2+2x+3c=0
x+2c=0
x= -2c
3. (6х-4n)-(2х^2+х)+(2х^2-n)=0.
6x-4n -x-n=0
5x-3n=0
5x=3n
x=3n/5