An enclosed rectangular garden is 6 meters by 15 meters. Additional fencing within the garden can divide it into three smaller plots, two of them square and one rectangular. What is the least number of meters of additional fencing that is needed?

You can write an equation in 2 variables to slove a problem by Solving  for y  using  The Method of Elimination: The process of substitution involves several steps: In a two-variable problem rewrite the equations so that when the equations are added, one of the variables is eliminated, and then solve for the remaining variable.