Free math problem solver answers your algebra homework questions with step-by-step explanations. Basically the calc solves the following algebra problems. The equations section lets you solve an equation or system of equations.
The calculator works with both equations and expressions.
Click the blue arrow to submit and see the result. To solve an equation we use the addition-subtraction property to transform a given equation to an equivalent equation of the form x a from which we can find the solution by inspection. Therefore add 9 to both sides. Click the blue arrow to submit and see the result.