Răspuns :
Răspuns:
x+y= 17
x-y= 5
y+5+y= 17
2y= 12
y= 6
x= 6+5= 11
6×11= 66
Răspuns:
a+b=17
a-b=5
a+b+a-b=17+5
2a=22=>a=22:2=>a=11
11+b=17=>b=17-11=>b=6
Răspuns:
x+y= 17
x-y= 5
y+5+y= 17
2y= 12
y= 6
x= 6+5= 11
6×11= 66
Răspuns:
a+b=17
a-b=5
a+b+a-b=17+5
2a=22=>a=22:2=>a=11
11+b=17=>b=17-11=>b=6