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This article was co-authored by David Jia. David Jia is an Academic Tutor and the Founder of LA Math Tutoring, a private tutoring company based in Los Angeles, California. With over 10 years of teaching experience, David works with students of all ages and grades in various subjects, as well as college admissions counseling and test preparation for the SAT, ACT, ISEE, and more. After attaining a perfect 800 math score and a 690 English score on the SAT, David was awarded the Dickinson Scholarship from the University of Miami, where he graduated with a Bachelor’s degree in Business Administration. Additionally, David has worked as an instructor for online videos for textbook companies such as Larson Texts, Big Ideas Learning, and Big Ideas Math.
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The TI-83/TI-84 calculator is an essential tool for any student in a math or science course. Solving for unknown variables is a common problem that students may run across while taking these courses. This manual tells you how to utilize your calculator to solve for unknown variables. If you are at least at an intermediate level in algebra, can understand the math behind this calculation, and are somewhat familiar with the TI-83/TI-84 calculators, get started at step 1, below.
Steps
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Remember that there are multiple methods to solving an equation with one unknown. For complex problems that route may not be straightforward and solver would be the best way to go. -
Write the equation you want to solve on a piece of paper.- Sample equation: 7x^4 + 2x^3 – 5x + 2 = 43 + 3x.
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On the paper, move variables around using algebra to have one side of the equation set to “0”. You are now ready to solve for x using solver. -
Turn on the calculator using the “on” button. -
Press the “MATH” button. -
Navigate using the arrow keys to the “Solver” option, press “Enter”. -
Type in the equation (the other side without the “0”) as it appears onto the calculator. Warning: read proceeding sections in this step before attempting.- To type in X use the “X,T,Ø,n” button.
- To type in powers of numbers use the “^” button followed by the number of the power.
- Complete the rest of this equation and press “Enter”.
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Press the “Alpha” then “Enter” button. -
Review the result. The number for “X=” should change to the answer of the unknown variable.
Expert Q&A
Tips
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Try to solve without using solver to see if your answer matches the solver method.Thanks
Warnings
- Be careful when writing the equation in the calculator, check if all of the powers and signs are in the right locations.Thanks
- The "parenthesis" button can be used to separate variables. This tool can be useful when equations become very complex.Thanks
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