Răspuns :
a)a+b=43 b)a+b+c=48
a=b+1 a=b+1
(b+1) +b=43 c=b+2
2b=42= ( b+1)+ b+(b+2)=48
b=42:2 3b+3=48
b=22 3b=45
a=23 b=45:3
b=15 a=16 c=17 c)a+b+c=26
a=b+2
(b+2)+2=26
2b=24
b=12
a=14
a)a+b=43 b)a+b+c=48
a=b+1 a=b+1
(b+1) +b=43 c=b+2
2b=42= ( b+1)+ b+(b+2)=48
b=42:2 3b+3=48
b=22 3b=45
a=23 b=45:3
b=15 a=16 c=17 c)a+b+c=26
a=b+2
(b+2)+2=26
2b=24
b=12
a=14