Question

The sum of the measures of angle A, angle B, and angle C is 180 degrees. The measure of angle C

is five times the measure of angle A. The measure of angle B is 40 degrees more than the
measure of angle A.

Write a system of equations that represents this situation

Answer 1

A=20

Explanation:

a+b+c=180

A+A+40+5A=180

7A=140

/7

A=20

20+(20+40)+20*5=180

20+40=60

60+20=80

20*5-100

100+80=180

Hope this helps! :)

Answer 2

A=20

Explanation:

a+b+c=180

A+A+40+5A=180

7A+40=180

7A=140

/7

A=20

20+(20+40)+20*5=180

20+40=60

60+20=80

20*5-100

100+80=180