Scenario of the application problem:

Let's consider a real-world example for a simple one unknown equation. Suppose you have a savings goal of: $c , with an initial investment of: $b, and want to calculate how much money you need to save each month: $x , to reach that goal in a certain number of months: a.

Equation:

ax + b = c

solution:

x = (c-b)/a

Monthly saving needed = (saving goal - initial deposit)/Number of months