in the figure, if l is parallel to m, angle 1 = (x+30 degree) and angle 2 = (2x+15 degree), find angle 3 and angle 4​

angle 1= x+30
angle 2=2x+15
angle 1+ angle 2=180 degree  (co. interior angle)
x+30+2x+15=180
3x+45=180
3x=180-45
3x= 135
x=135/3
x=45

angle 1 =x+30
angle 1=45+30
angle 1=75

angle 2=2x+15
angle 2=90+15     (.^.. 2*45=90)
angle 2=105

angle 2=angle 4
angle 1=angle 3
angle 3=75
angle 4=105