Question

Решить систему
log3(x-y)=1
log4 x-log4 y=2

Answer 1

Log3 ( x - y ) = 1
3×( x - y ) = 1
3 × x - 3 × y = 1
3x - 3y = 1
-3y + 3x = 1
- ( - 3y + 3x ) = -1
3y - 3x = -1