MultiStep Equations with Like Terms
Key Questions

You combine like terms by variable(s) and exponent(s).
The variables and exponent must match in order to combine.
So take
#x^2 + x# . Variables (x and x) match, but exponents (2 and 1) do not, so you cannot combineTake
#x^2 + y^2# . Exponents (2 and 2) match, but variables (x and y) do not.Now, take
#3x^2 + 5x^2# These CAN be combine since the variable of x and power of 2 match.So we have
#3x^2 + 5x^2 = (3 + 5)x^2 = 8x^2# 
Example . Solve: 3x + 4m  5 = 2x  2m + 7.
First, combine x terms: 2x =  2x
x + 4m  5 = 2m + 7
Next, combine m terms and constants
 4m + 5 =  4m + 5
______
x = 6m + 12