En resumen

<img src="https://tex.z-dn.net/?f=%5Cleft%28-2%2B7%5Cright%29%5Cleft%28-3%5Cright%29" /> <img src="https://tex.z-dn.net/?f=%5Cmathrm%7BRestar%5C%3A%5Cleft%28de%5C%3Aizquierda%5C%3Aa%5C%3Aderecha%5Cright%29%7D%5C%3A-2%2B7%3D5" /> <img src="https://tex.z-dn.net/?

Mejor respuesta

Artracasteffy
6

<img src="https://tex.z-dn.net/?f=%5Cleft%28-2%2B7%5Cright%29%5Cleft%28-3%5Cright%29" />

<img src="https://tex.z-dn.net/?f=%5Cmathrm%7BRestar%5C%3A%5Cleft%28de%5C%3Aizquierda%5C%3Aa%5C%3Aderecha%5Cright%29%7D%5C%3A-2%2B7%3D5" />

<img src="https://tex.z-dn.net/?f=%3D5%5Cleft%28-3%5Cright%29" />

<img src="https://tex.z-dn.net/?f=%5Cmathrm%7BMultiplicar%5C%3A%5Cleft%28de%5C%3Aizquierda%5C%3Aa%5C%3Aderecha%5Cright%29%7D%5C%3A5%5Cleft%28-3%5Cright%29" /> = - 15.