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2x=10+x

2x+1=10


Răspuns :

2x-10-x=0 => x=10

2x+1=10 => 2x=10-1 => 2x=9 => x=9/2
2x=10+x
2x*x=10
x^2=10/2
x^2=5
x=5*2
x=10



2x+1=10
2x=10-1
2x=9
x=9/2
x=4.5