Help if your good at maths

Let's make another angle y

Where y= 51° (corresponding angles )

and x+y= 180°. ( linear pair )

x+51°= 180° (y=51°)

x=180°-51°

x= 129°

So the value of x is 129°

Hope you got your answer !

129°

Step-by-step explanation:

x and 51° are corresponding angles, therefore their sum is 180°

so x= 180° -51°= 129°