Answer:
Step-by-step explanation:
the second one , why? because 7a-12a=-5a
4 - 8 = -4
Answer:
you need to add more details
Answer:
<h2>
258</h2>

Step-by-step explanation:


Long story short ,

Answer:
You add it in your mind.
Step-by-step explanation:
Answer:
The answer to your question is (4, 6)
Step-by-step explanation:
Data
E ( 9 , 7 )
F ( - 1, 5)
Formula


Substitution and simplification


Xm = 4


Ym = 6
Result
(4 , 6)