10 more than 451 would be 451 + 10 = 461.
If its a triangle u have to add the given angles and subtract by 180 to get x
I am absolutely sure that the task <span> b = 3, then 3x + y = 1 and bx - y = 3 is NOT parallel, which means that the statement represented above is FALSE.
To make sure you can check it using : </span>
Hope now it's obvious. Regards!