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Solutia reala a ecuatiei -2x+11=7

Răspuns :

-2x=7-11
-2x=-4
x=-4:(-2)=2
[tex] - 2x + 11 = 7[/tex]

[tex] - 2x = 7 - 11[/tex]

[tex] - 2x = - 4 \: | \div ( - 2)[/tex]

[tex]x = 2 \: \epsilon \: \mathbb{R}[/tex]