We will now start learning about Algebra.
Algebra can be thought of as looking for
unknown numbers (sometimes called variables).
The unknown numbers are usually written as
a letter. The letter stands for a number we are
looking for. So for example 3+x=5 means
we are looking for the number that would
make the equation true. so we know that
2 = x would make it true. Let's watch a video
that introduces how we solve more questions like
this. https://youtu.be/rBf1eYwwQFE
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