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How Do You Substitute Variables? [Solved]
Substituting for a Variable If you know the value that the variable is equal to, you can substitute that value in for the variable in the expression! Let’s look at an example. Since we know that x=5, we can directly substitute or replace the x in the expression x+3 with a 5 to solve for y!
How to Substitute the Value of a Variable in Mathematics
How to
The substitution method | Systems of equations | 8th grade | Khan Academy
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Learn to solve a system of equations using substitution
Learn how to solve a system of equations by
