{3x+y=3 {log(3)(5x+4y)=log(3)(y+5)

Question

{3x+y=3

{log(3)(5x+4y)=log(3)(y+5)

Answer 1

y=3-3x

5x+4(3-3x)=3-3x+5

y=3-3x

5x+12-12x=8-3x

y=3-3x

4x=4 => x=1

y=3-3=0

ОДЗ: y+5>0 y>-5; 12-7x>0 7x<12 x<12/7</p>

Ответ: (1;0)