Question

Two Angles measure (55 +3a) and (115-2a)
is supplement of the other, then
the value of
a is
a) 60°
b) 10
c) 70

​

Answer 1

Answer:

b) a = 10°

Step-by-step explanation:

If other angle is supplement of one angle.

Then, their sum = 180°

55 + 3a + 115 - 2a = 180°

170° + a = 180°

a = 180° - 170°

a = 10°

Answer 2

Answer:

as the two angles are supplement,so their sum is 180°

(55+3a)+(115-2a)=180

=> 55+3a+115-2a=180

=> 170+a=180

=> a=180-170=10

so the value of a is 10