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4*1+3x=12
2(x-3)=216
53x=x+1
280:x=155-85
AJUTOR DAU SI CORANA


Răspuns :

2x-6=216 => 2x=216+6 => 2x= 222 => x=222:2 => x=111
4*1+3x=12=> 4*3x=12=> 12x=12=>x=12/12=>x=1
280:x=70=>x=280:70=>x=4