Subtract 2 numbers then subtract it with 180 (sorry if you get it wrong)
It's probably 8 actually. Because you measure the AC and the CB and just subtract.
First problem:
n/4 + 2 = -9
-2 -2
n/4 = -11
x4 x4
n = -44
Check:
-44/4 + 2 = -9
-11 + 2 = -9
-9 = -9
Second problem:
3/4x = -12
0.75x = -12
-------- ----
0.75 0.75
x = -16
3/4 * (-16) = -12 OR 0.75 * (-16) = -12
-12 = -12
Still get the same answer.
So x=11
So 3/11=33-4=29 =2/11=22+7=29