765 -314 765 -415 765 -517 765 -619 (13) 751 -221 (14) 75vert -225 (15) 67 -226 67vert -323

* **765 - 314:**<br /><br />```<br /> 765<br />-314<br />----<br /> 451<br />```<br /><br />* **765 - 415:**<br /><br />```<br /> 765<br />-415<br />----<br /> 350<br />```<br /><br />* **765 - 517:**<br /><br />```<br /> 765<br />-517<br />----<br /> 248<br />```<br /><br />* **765 - 619:**<br /><br />```<br /> 765<br />-619<br />----<br /> 146<br />```<br /><br />* **(13) 751 - 221:**<br /><br />```<br /> 751<br />-221<br />----<br /> 530<br />```<br /><br />* **(14) 751 - 225:** (Assuming the stray vertical line in the original problem was a typo and meant to be 1)<br /><br />```<br /> 751<br />-225<br />----<br /> 526<br />```<br /><br />* **(15) 671 - 226:** (Assuming the stray vertical line in the original problem was a typo and meant to be 1)<br /><br />```<br /> 671<br />-226<br />----<br /> 445<br />```<br /><br />* **671 - 323:** (Assuming the stray vertical line in the original problem was a typo and meant to be 1)<br /><br />```<br /> 671<br />-323<br />----<br /> 348<br />```<br />