Question

Difficulty: EasySolving One-Variable Linear Equations

Which value of mm is the solution to the equation below?

6m−12=2m+166m - 12 = 2m + 16
  1. 77Answer
  2. B
    11
  3. C
    −2-2
  4. D
    −7-7

Answer

The correct solution is 77.
By subtracting 2m2m from both sides and then adding 12 to both sides, the equation simplifies to 4m=284m = 28. Dividing by 4 gives the correct result of 77.

Step-by-Step Solution

1
Subtract 2m2m from both sides of the equation to group the variable terms on the left side.
4m−12=164m - 12 = 16
This keeps all instances of the unknown variable mm on one side.
2
Add 12 to both sides of the equation to isolate the variable term.
4m=284m = 28
This cancels out the constant on the left side, leaving only the term with mm.
3
Divide both sides by 4 to solve for mm.
m=7m = 7
This removes the coefficient, revealing the final value of the variable.

Key Concept

Solving One-Variable Linear Equations
Estimated Time:45s
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