√画像をダウンロード 5/x+y+1/x-y=2 15/x+y-5/x-y=-2 221754-Is y 5x proportional
Divide y by y Divide \frac {1} {y}, the coefficient of the x term, by 2 to get \frac {1} {2y} Then add the square of \frac {1} {2y} to both sides of the equation This step makes the left hand side of the equation a perfect square Square \frac {1} {2y} Factor x^ {2}\frac {1} {y}x\frac {1} {4y^ {2}}
