Question

if pqr is a line then find the value of a in 3a+5 2a-25

Answer 1

Here is your answer mate...✌✌

We know that the measure Straight line is 180°.

Then, the measure of line PQR is also 180°.

Given,

3a+5 ,2a-25,

then,

3a+5+2a-25 =180°

5a-20 =180°

5a=180°+20

5a = 200°

a = 200°/5

a = 40° ans..