Question

One of the two sumplementary angle is 20 less than three times of the other then find them

Answer 1

let both the angle be X and Y

so X+Y=180----(1)

and,

x=3y-20 ----(2)

put the value of x from equation (2) in equation (1)

so,

3y-20+y=180

so y=

$\boxed{50}$

put the value of y in any equation

so the value of x is

$\boxed{130}$

hope it helps

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Answer 2

$\mathfrak{\huge{Answer:}}$

$\mathbb{GIVEN}$

One of the two supplementary angles is 20 units less than three times the other angle.

$\mathbb{TO\:FIND}$

The two angles

$\mathbb{METHOD}$

Let one of these two supplementary angles be = x

The other angle will be = 3x - 20

$\bf{Supplementary\:Angles:}$ The angles which have their sum equal to 180° are called Supplementary Angles.

=》 x + 3x - 20 = 180°

Solve this formed equation further

=》 4x = 200

=》 x = 50°

3x - 20 = 150 - 20

=》 130°

Thus, the angles will be $\huge{\mathfrak{50\degree \:and\: 130\degree}}$