3Log3 15 - Log3 5 + 1= Log3 (15^3) - Log3 5 + 1= Log3 3375 - Log3 5 + 1= Log3 (3375 / 5) + 1= Log3 675 + 1= Log3 (3^4 * 5) + 1= Log3 3^4 + Log3 5 + 1= 4 + Log3 5 + 1= Log3 5 + 5
Поэтому 3Log3 15 - Log3 5 + 1 = Log3 5 + 5.
3Log3 15 - Log3 5 + 1
= Log3 (15^3) - Log3 5 + 1
= Log3 3375 - Log3 5 + 1
= Log3 (3375 / 5) + 1
= Log3 675 + 1
= Log3 (3^4 * 5) + 1
= Log3 3^4 + Log3 5 + 1
= 4 + Log3 5 + 1
= Log3 5 + 5
Поэтому 3Log3 15 - Log3 5 + 1 = Log3 5 + 5.