Answer:
y+75°=180°[co interior angle]
or,y=180-75
•°•y=105
again,
y=z(alternate angle)
•°•z=105°
now
z+x+68°=180(sum of angle of triangle is 180)
or,105+68+x=180
or,x+173=180
or,x=180-173
•°•x=7
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