Sistema de cuaciones combinadas {x + 5y = 17} {x2 + y2 = 13}?

Respuesta : <img src="https://tex.z-dn.net/?f=x%3D%5Cfrac%7B31%7D%7B8%7D%5C%5C%5C%5Cy%3D%5Cfrac%7B21%7D%7B8%7D" />Explicación paso a paso : <img src="https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7Bx%2B5y%3D17%7D%20%5Catop%20%7Bx2%2By2%3D13%7D%7D%20%5Cright.%5C%5C%5C%5Cx%2B5y%3D17%5C%5Cx%3D17-5y%5C%5C%5C%5Cx2%2By2%3D13%5C%5C2x%2B2y%3D13%5C%5C2x%3D13-2y%5C%5Cx%3D%5Cfrac%7B13-2y%7D%7B2%7D%5C%5C%5C%5C17-5y%3D%5Cfrac%7B13-2y%7D%7B2%7D%5C%5C2%2817-5y%29%3D13-2y%5C%5C34-10y%2B2y%3D13%5C%5C-8y%3D13-34%5C%5Cy%3D%5Cfrac%7B-21%7D%7B-8%7D%5C%5Cy%3D%5Cfrac%7B21%7D%7B8%7D%5C%5C%5C%5Cx%3D%5Cfrac%7B13-2y%7D%7B2%7D%5C%5Cx%3D%5Cfrac%7B13%7D%7B2%7D-%5Cfrac%7B2y%7D%7B2%7D%5C%5Cx%3D%5Cfrac%7B13%7D%7B2%7D-y%5C%5Cx%3D%5Cfrac%7B13%7D%7B2%7D-%5Cfrac%7B21%7D%7B8%7D%5C%5Cx%3D%5Cfrac%7B13%288%29-2%2821%29%7D%7B%282%29%288%29%7D%5C%5Cx%3D%5Cfrac%7B104-42%7D%7B16%7D%5C%5Cx%3D%5Cfrac%7B62%7D%7B16%7D%5C%5Cx%3D%5Cfrac%7B31%7D%7B8%7D%5C%5C" /> - ¡Saludos!