Consider another example, 4x + 8 = 40. In this example, we are looking for a
number when multiplied by 4 and added 8 to it will give 40. We can try to figure out
this number through guessing and checking. Eventually we will find that 8 is the
replacement for x. However, with a systematic procedure of solving equations, we
can easily solve that problem without going through the throes of guessing and
Math Skills for Business- Full Chapters 2
checking. Before we start learning that procedure for solving equations, let us try
to understand the meanings of like terms and unlike terms.
