1) 8 3/17 * 5 1/4= 8*17+3/17 * 5*4+1/4= 139/17 - 21/4= 139*21/17*4= 2919/68= 42 63/68
2) 3 14/17 * 5 1/4= 3*17+14/17 * 5*4+1/4= 65/17 * 21/4= 65*21/17*4= 1365/68= 20 5/68
3) 42 63/68 + 20 5/68= 42*68+63/68 + 20*68+5/68= 2919/68 + 1365*68= 2919+1365/68=4284/68=63