Solving Addition Equations
An addition equation is any equation where only addition is involved. This page is a tutorial on how to solve equations involving addition.
To solve an addition equation, you need to find the value of a variable in the equation. For example :
20 = x + 5
The first thing to do is to get rid of the <code>5</code> and get <code>x</code> by itself. So we subtract <code>5</code> from <code>x + 5</code>. To keep the equation balanced, we also subtract <code>5</code> from <code>20</code>.
20 - 5 = x + 5 - 5
Once this is done, we are left with the value of <code>x</code>, which, in this example, is 15.
15 = x
The entire process looks like this :
20 = x + 5
20 - 5 = x + 5 - 5
15 = x
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