Răspuns :
Răspuns:
X+Y =17
X-y=5
X=5+Y
5+y+y=17
2y=17-5
2y=12
y=6
x+6=17
X=17-6=11
X=11
11×6 =66
a + b = 17
a - b = 5 => a = 5 + b
5 + b + b = 17
5 + 2b = 17
2b = 17 - 5
2b = 12
b = 12 : 2
b = 6
a = 6 + 5
a = 11
11 × 6 = 66 ( produsul)
Răspuns:
X+Y =17
X-y=5
X=5+Y
5+y+y=17
2y=17-5
2y=12
y=6
x+6=17
X=17-6=11
X=11
11×6 =66
a + b = 17
a - b = 5 => a = 5 + b
5 + b + b = 17
5 + 2b = 17
2b = 17 - 5
2b = 12
b = 12 : 2
b = 6
a = 6 + 5
a = 11
11 × 6 = 66 ( produsul)