Options for #1 15.6
50.42
56.4
91.22
91.55
107.15

Options for #2
50.42
91.22
91.55
107.15
141.97
147.95

1. 56.4

2.107.15

So for the first one I subtracted like this:53.41- -2.99=56.4

You may be wandering why i subtracted that way,I did that because you are meant to subtract and the second number already has a negative sign which is MINUS.

And for the second I subtracted the smaller number from the bigger number this way:144.96 ‐ 37.8

Hope this helps...

Is your answer.

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12