Answer:
n = (- 13 - m) / 2
Step-by-step explanation:
m + 1 = -2 (n + 6) Distribute the -2 to (n +6)
m + 1 = -2n - 12 Add 2n to both sides
m + 1 + 2n = -12 Subtract 1 from both sides
m + 2n = -13 Subtract m from both sides
2n = -13 - m Divide both sides by 2
n = (- 13 - m) / 2
