Răspuns :
a + b = 16
a = b + 4
b + 4 + b = 16
2b = 16 - 4 = 12
b = 12 : 2 = 6
a = b + 4 = 6 + 4 = 10
a = b + 4
b + 4 + b = 16
2b = 16 - 4 = 12
b = 12 : 2 = 6
a = b + 4 = 6 + 4 = 10
I-x+4
II-x
Prin ecuatie:
x+x+4=16
2x+4=16
2x=16-4
2x=12
x=12:2
x=6
II-6 I-10
II-x
Prin ecuatie:
x+x+4=16
2x+4=16
2x=16-4
2x=12
x=12:2
x=6
II-6 I-10