Checking Answers Using Algebra Calculator - MathPapa

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Learn how to use the Algebra Calculator to check your answers to algebra problems.

Example Problem

Solve 2x+3=15.

Check Answer

x=6

How to Check Your Answer with Algebra Calculator

First go to the Algebra Calculator main page.

Type the following:

  1. First type the equation 2x+3=15.
  2. Then type the @ symbol.
  3. Then type x=6.
Try it now: 2x+3=15 @ x=6

Clickable Demo

Try entering 2x+3=15 @ x=6 into the text box.

After you enter the expression, Algebra Calculator will plug x=6 in for the equation 2x+3=15: 2(6)+3 = 15.

The calculator prints "True" to let you know that the answer is right.

More Examples

Here are more examples of how to check your answers with Algebra Calculator. Feel free to try them now.
  • For x+6=2x+3, check (correct) solution x=3: x+6=2x+3 @ x=3
  • For x+6=2x+3, check (wrong) solution x=2: x+6=2x+3 @ x=2
  • For system of equations x+y=8 and y=x+2, check (correct) solution x=3, y=5: x+y=8 and y=x+2 @ x=3, y=5
  • For 3xy=18, check (correct) solution x=2, y=3: 3xy=18 @ x=2, y=3

Need Help?

Please feel free to Ask MathPapa if you run into problems.

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