Question

find a pair of linear equations.

Answer 1

Let x, y be the two supplementary angles.

We know that, Sum of angles = 180 .

x + y = 180

Also, Given that x - 18 = y.

Now, We have
x+y = 180
x-18 =y.

Now, Substitute value of y.

x + ( x - 18 ) = 180

2x - 18 = 180

2x = 198

x = 99 .

y = 99 - 18 = 81

Hope helped!