I dont understand, Can someone please help?

Question

The measure of one of the angles of a triangle is 35. The sum of the measures of the other two angles is 145 and the difference between their measures is 14. What are the measures of the unknown angles?

Answer 1

a=35

b+c=145

b-c=14

2b=159

You take it from here.

Answer 2

The measure of one of the angles of a triangle is 35. The sum of the measures of the other two angles is 145 and the difference between their measures is 14. What are the measures of the unknown angles?

We know the two angles add up to 145. We also know that when you subtract these angles you get 14.

x+y=145

x-y=14

Solve this system using elimination.

2x=159

Once you get x, plug that number into one of the above equations to get your y value.