Explanation:
- 5 = 12 : Original Problem
-5 +5 = 12 + 5 : Bringing the constants to one side
= 17 : Simplification
×8 = 17×8: Isolating the variable
m = 136 : The answer!!!
Checking the answer
-5 = 12 : Substitution
= 17 : Bringing constants to one side and simplification
136 = 17 × 8 : Isolating the answer
136 = 136 : Success!!!
I hope this is what you wanted and I hope this helps!!!