Răspuns :
a - b = 15
a : b = 2 rest 7
a = 2b + 7
2b + 7 + b = 15
b = 15 - 7
b = 8
a - 8 = 15
a = 15 + 8
a = 23
a : b = 2 rest 7
a = 2b + 7
2b + 7 + b = 15
b = 15 - 7
b = 8
a - 8 = 15
a = 15 + 8
a = 23
[tex]Metoda~grafic\breve{a}[/tex]
a |--------|---------|-7-|
b |--------|[........15........]
15-7=8 (un segment)
a=8×2+7
a=16+7
a=23
b=8
a |--------|---------|-7-|
b |--------|[........15........]
15-7=8 (un segment)
a=8×2+7
a=16+7
a=23
b=8