The angles of a triangle equal 180 degrees when added together. We will use this logic to solve all three for x. We will use inverse operations and combine like terms to solve.
[30] Answer: x = 36
Step-by-step explanation:
2x + 2x + x = 180
5x = 180
x = 36
[31] Answer: x = 9
Step-by-step explanation:
* the little box represents 90 degrees
7x + 3x + 90 = 180
10x = 90
x = 9
[32] Answer: x = 45
Step-by-step explanation:
2x + x + x = 180
4x = 180
x = 45