Angles a and b are supplementary . Angle a has a measure of 80 . What is the measure of angle b? The measure of angle b is?

100 degrees

Step-by-step explanation:

180-80=100

100 degrees

Answer above is correct

180-80=100

c

step-by-step explanation:

at least i think its

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: