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Homework Help: Math: Algebra: Introduction to Algebra (page 2)
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 We will now convert
the picture of the scale into an equation. This is a simple process,
and all you have to do is place your two values on opposite sides
of an equals sign.
That's
a great equation we have created, but it serves no purpose. It
is obvious to anyone that 4+2=3+3, because 6=6. The equation is
useful in finding the value of a missing number. Say we had a
equation like this:
The
empty box indicates a missing number. We know something should
go there, but what? This equation can be solved by adding 3+3
to get 6, and then recognizing that 4+2=6. The number 2 is the
missing number. Now we have actually accomplished something with
our new friend, the equation.
continue to page 3
Copyright © 2002 Ted Wilcox
This lesson was reproduced on Jiskha Homework Help with permission from the author.
Homework Help: Math: Algebra
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