1.10 = x + y
x = 1 + y
subtract 1
.10
x = y
.10
the answer is .10
Answer:
y=z(vertically opposite angle)
a=z(alternate angle)
z=d(corresponding angle)
z+c=180(co-interior angle)
y+z=180 is incorrect
interior angles of a triangle add upto 180°.
(7x+10)+(x+20)+2x=180°
7x+10+x+20+2x=180
collecting like terms;
7x+x+2x+10+20=180
10x+30=180
10x=180-30
10x=150
10x/10=150/10
x=15°
substituting X in the angles;
7x+10=7(15)+10=115°
x+20=15+20=35°
2x=2(15)=30°
there the largest angle is 7x+10=115°