What is linear programming? and what is the easiest way to solve it?

 linear programming is a method to achieve the best outcome (such as maximum profit or lowest cost) in a mathematical model whose requirements are represented by linear relationships. Linear programming is a special case of mathematical programming (mathematical optimization).

To solve a linear programming problem you have to graph a system of inequalities. Once you have graphed the system, locate the points of intersection of all the lines. These points of intersection become the ordered pairs, x and y values that you will use in your optimization equation.
You will use the answer from this optimization equation and each individual ordered pair to find the minimum or maximum. Depending on the question asked.

Idon’t exactly understand but i think dbc=rst

Think of it as five or above give it a shove. change the 5 or above to the right to a zero and add one to the number on the left.