SOLUTION: the measure of 2 (angle 2) is 7� larger than the measure of 1. The measure of 3 is 7� larger than the measure of 2. Find each angle measure I know a triangle must add up to 180

Question 783421: the measure of 2 (angle 2) is 7� larger than the measure of 1. The measure of 3 is 7� larger than the measure of 2. Find each angle measure
I know a triangle must add up to 180 degrees. These are interior angles. I also know that I need to set up a formula and I dont know how. So far I tried x+x+7+x+7=180 but its not working. Any help would be greatly appreciated.
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
let x be the measure of 1
then x+7 is the measure of angle 2
and x+7+7 is the measure of angle 3
so we have x +x+7 +x+14 =180
3x +21 = 180
3x = 159
x = 53
angle 1 = 53
angle 2 = 60
angle 3 = 67
and 53 +60 +67 = 180
180 = 180

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