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2*(x+5)-x+3*(x-1)=35

(rezolvare va rog)


Răspuns :

2x+10-x+3x-3=35 => 4x=28 => x=7
desfaci paranteza  2x+10-x+3x-3=35
2x-x+3x=35-10+3=
4x=28
x=7