Match the equation with the step needed to solve it.
subtract 1 2m - 1 = 3m
subtract 2 2m = 1 + m
subtract m m - 1 = 2
add 2 2 + m = 3
subtract 2m -2 + m = 1
add 1 3 = 1 + m
subtract 1 2m - 1 = 3m
subtract 2 2m = 1 + m
subtract m m - 1 = 2
add 2 2 + m = 3
subtract 2m -2 + m = 1
add 1 3 = 1 + m