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Solutiile in R a ecuatiilor :

Solutiile In R A Ecuatiilor class=

Răspuns :

a) 3x^2=27
x^2=9
x=+-3
b) 5x-5=3x+7
5x-3x=7+5
2x=12
x=6
c)(2x+3)/2-2*1/3=(3x+1)/6
aducem la acelasi numitor
3(2x+3)-4=3x+1
6x+9-4=3x+1
6x-3x=1-5
3x=-4
x=-4/3