Answer:
I'm pretty sure its A
Step-by-step explanation:
Don't listen to me if its wrong
Answer:
a = 180 - b + c
Step-by-step explanation:
a + b - c = 180
Move b by subtracting b from both sides.
a - c = 180 - b
Move c by adding c to both sides.
a = 180 - b + c
Therefore a equals 180 - b + c.
Answer:
only five points uneceptableeeeee