Please help me I’ll mark brainliest

Answer x = 40
Explanation:
First let’s find angle D
D= 360-Q= 360-100=260
Now find angle A
Before the cut angle A = 90
Then A = 90-P=90-60=30

Now let’s find the missing x angle
We know that the interior of a quadrilateral is 360
Then 360= angle A + angle D + angle C + x
Find x:
x= 360- (30+ 260+30)= 40
So the answer is 40 degree

The answer is 1 because you have to flip the sign when dividing by negative number and 3