-2 should be correct. It is an input for that given graph.
If you do 27-12 (which is 15) you add 15 to 13 and 20
Answer: D:
To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 5. The solution to system B will be the same as the solution to system A.
Step-by-step explanation:
