Question

please answer this question with process /explanation.​

Answer 1

Answer:

40

Step-by-step explanation:

ABD and CBD are isolaterall triangles

angle ADB=ABD=40

angle CDB=CBD=40

In triangle ADB and CBD

BAD+ADB+DBA=180            

BAD=180-80

BAD=100

BDC+DCB+CBD=180

DCB=100

Y=?

DAC=180-40+90=50

Y=50

X=?

BXC=180-40-50=90

X=90

X-Y=90-50=40