Question

(x+15) and (2x+15) are angles in a linear pair, find value of x​

Answer 1

Answer:

X+15+2x+15=180...angles in a linear pair measure up to 180 degrees

3x+30=180

3x=180-30

3x=180

X=180/3

X=60 degrees

Thus, x+15=69+15=84 degrees

2x+15=2*60+15=120+15=135 degrees

Answer 2

Answer:

Let a = ( x+15) and b=(2x+15)

then the Sum of linear pair of angle is 180

so,that {a+b} = 180

#. ( x+15) + (2x+15) =180

#. x+15+2x+15 = 180

#. 3x+30 = 180

#. 3x = 180 -30

#. 3x = 150

#. x = ( 150/ 3)

#. x = 50

then,

a = ( x+15)= (50+15) = 65°

b=(2x+15)= (2×50+15) = 100+15 = 115°

so, that one angle is 65°

and second angle is 115°