Solve the system using substitution. Show all work.
y = x - 5
3x - y = 7

Solve the system using the Linear Combination Method. Show all work.

2x + 2y = 12
3x + y = 2

SHOW ALL WORK AND STEPS Please. The Teacher will not grade fully and give a failing grade without showing steps and all work.

And Don't be a freaking troll as I will report you for trolling with short improper answers.