How to solve and check equations

Solving equations is pretty easy to do, but sometimes people get confused. The main rule of equations is, whatever you do to one side of the = sign you do to the other. Say you had 4xb=2o, since you are multiplying you want to divide. Then you do 4/4=0, whatever you do to one side do to the other, 20/4=5. 5+0=5, so 5 is your answer. An equation is something that has 2 numbers, an operation, an equal sign, and a variable. Checking your answer is very easy. All you do is this: First, you rewrite the problem,4xb=20. Then plug the answer into the equation,4x5=20. Next, do the problem, 20=20. Lastly, if the 2 numbers are the same put the variable = the number, b=5.http://www.teacherschoice.com.au/Maths_Library/Algebra/Alg_21.htm