Question

Solve. One point for showing the steps to solve each equation and one point for the correct solution.
3m - 5 = 7m - 21

Answer 1

First get the variable you want to solve for on one side of the equals sign. Here we subtract 7m from both sides:

3m - 7m - 5 = - 21

Collect like terms:

-4m - 5 = -21

Add 5 to both sides:

-4m = -16

Divide both sides by -4.

m = 4