Answer:
12 x 2.5 = 30
Step-by-step explanation:
The answer is -8 the angles of the triangle are 180 so
180=42+x+76+x+78
180=2x+196
2x=-16
x=-8
The middle is zero to the left starting at one go to -5 or whatever the lines stop at (don't forget those are the negative).
Then for the right do the same but positive.
Answer:
4 2/3
Step-by-step explanation: