Răspuns :
a+b = 129
a-b = 41
a=41+b
41+b+b = 129
2b = 129 - 41
2b = 88
b = 88:2
b=44
a= 44+41 = 85
85+44 = 129
85-44= 41
a-b = 41
a=41+b
41+b+b = 129
2b = 129 - 41
2b = 88
b = 88:2
b=44
a= 44+41 = 85
85+44 = 129
85-44= 41
a |___| 41
→ 129
b |___|
1) 129-41 = 88 ( doua parti egale )
2) 88:2=44 ( b )
3) 44 +41=85 ( a )
→ 129
b |___|
1) 129-41 = 88 ( doua parti egale )
2) 88:2=44 ( b )
3) 44 +41=85 ( a )