Question

how to solve this ?
please tell​

Answer 1

Answer:

x=5

we know that ∠AOD = ∠COB as they are vertically opposite angles

hence we can write

      4x+20 = 7x+5

on solving

   4x-7x = 5-20

   -3x = -15

minus sign will get cancelled

we get

     3x = 15

    x = 15/3

   x = 5

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

we know that vertical opp angles are equal. Therefore

4x+20=7x+5 which equal to 20-5 = 7x-4x

3x=15 ____ x= 15/3

x = 5