This lesson teaches how to solve a system of equations using substitution. Firstly, pick a variable to solve for, then plug this variable into the other equation. Solving the resulting equation will give the value of the second variable. Finally, plug the value of the second variable into either of the original equations to solve for the first variable. By following these quick and easy steps, a system of equations can be solved using substitution.
How to solve a system of equation using substitution
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