Question

please give me answer it is very urgent​

Answer 1

Answer:

To Find:- value of b

Solution:-

From the figure

x=y(alternate interior angles are equal)

also x=z

then y=z

that js 2a+30=b+20

First of all,find a

that is

we know,x=y

that is

a=2a+30

a-2a=30

a= -30

therefore value of a= -30

Let's check whether it's correct or not

a=2a+30

-30=2×-30+30

-30=-60+30

-30=-30

L.H.S=R.H.S

hence verified

also,we know

x=z,that is a=b+20

substituting the values

-30=b+20

b=-30-20

b=-50

Therefore value of b= -50

hope it helps

Hit The Brainliest if you find it helpful