Question

Given: ∠A and ∠B are complementary angles.

m∠A=3x+105 ; m∠B=−6x−39

Prove: m∠B=9°

Drag and drop reasons into the boxes to correctly complete the proof.

https://imgur.com/a/QIPKRF7

https://imgur.com/a/oInxkHP

Answer 1

@563blackghost

Answer 2

@Elsa213

Answer 3

You're gone

Answer 4

1- Subtraction property of equality (because you subtracted 66 on both sides)
2- Division property of equality (because you divided by -3 on both sides)
3- Angle Addition postulate (Both angle measures add up to 180 because they are complementary)