m+a+i=360 2x(m-50)=a+15 3x(m-50)=i+35 2x(m-50)=a+15⇒2m-115=a⇒2m-115 3x(m-50)=i+35⇒3m-185=i⇒3m-185 inlocuim a si i in relatie m+a+i=360⇒m+(2-115)+(3m-185)=360 deci ioana are 3x60=180 a avut initial 3x60-35=180-35=145 andrei are 2x60=120, a avut initial 2x60-15=120-15=105 iar mihai 60+15+35=110