1. Solving Simple Equations
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What is the difference between the balance you thought you had and the balance you actually have?
Equation: 68-26=C
Solution: The check was for $42.
To find the amount of the check you forgot to record, which we can call C, we need to find the difference between the balance you had written in your checkbook and the balance you actually had on your statement.
Checkbook balance- Actual balance=C
Now we can substitute the given values into our equation and solve for C.
Substitute values
Subtract term
Rearrange equation
The missing check we wrote was for $42. Notice that we did not need to rearrange our equation but, typically, solved equations are written with the variable on the left-hand side of the equation.