Răspuns :
b=a+1,c=a+2,d=a+3=>a+a+1+a+2+a+3=50
4a=44
a=11 deci:11+12+13+14=50
Da coroana
a+a+1+a+2+a+3= 50
4a= 50- (1+2+3)
4a=50- 6
4a= 44 |÷4
a=11
a+1=12
a+2=13
a+4=14
-------------
T: 50
4a= 50- (1+2+3)
4a=50- 6
4a= 44 |÷4
a=11
a+1=12
a+2=13
a+4=14
-------------
T: 50