What does m equal? M*10-m*13=138

If I read it right, you have

10m-13m = 138
-3m = 138
m = -46

m*10+m*13=138

To find the value of "m" in the equation M * 10 - m * 13 = 138, we can use algebraic methods to solve for "m". Here's the step-by-step process:

1. Distribute the multiplication: Rewrite the equation as 10M - 13m = 138.

2. Rearrange the equation: Bring all terms containing "m" to one side of the equation, and all terms without "m" to the other side. This is done by adding 13m to both sides: 10M - 13m + 13m = 138 + 13m.

Simplifying the equation gives: 10M = 138 + 13m.

3. Isolate the term with "m": Since we are solving for "m", we want to isolate that term. Subtract 138 from both sides: 10M - 138 = 13m.

4. Divide by 13: To solve for "m", divide both sides of the equation by 13: (10M - 138) / 13 = m.

5. Simplify the expression: If needed, simplify the expression on the right side of the equation.

Now, you have the value of "m" in terms of "M" and constants from the original equation.