Question

Помогите пожалуйста №7

Answer 1

$7); ; left { {{log_{pi }(3x-y)=0} atop {frac{25^{y}}{5^{x}}}=125} right. ; left { {{3x-y=pi ^0} atop {frac{5^{2y}}{5^{x}}}=5^3} right. ; left { {{3x-y=1} atop {5^{2y-x}=5^3}} right. ; left { {{y=3x-1} atop {2y-x=3}} right. ; left { {{y=3x-1} atop {2(3x-1)-x=3}} right. \\ left { {{y=3x-1} atop {6x-2-x=3}} right. ; left { {{y=3x-1} atop {5x=5}} right. ; left { {{y=2} atop {x=1}} right. \\ODZ:; ; 3x-y textgreater 0; ; to ; ; 3x textgreater y\\x=1; ; to ; ; 3cdot 1=3 textgreater 2\\Otvet:; ; (1,2); .$