Question

Please help me with Geometry A Proofs, due today, probably easy but I am so lost, I am not good at math please help!

Answer 1

1)2(m+3)=-6
2m+6=-6
2m=-6-6
2m=-12
M=-12/2=-6

2)2m+6=-6
2m=-6-6
2m=-12
M=-12/2=-6

3)2m+6-6=-6-6
2m=-12
M=-12/2=-6

4)2m=-12
M=-12/2=-6