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$\dfrac{a}{a}=1$
Slide 1 of 0
Theory
a
a
=
1
Any non-zero number or expression divided by itself is equal to
1
.
4
5
4
5
=
1
2
x
+
5
2
x
+
5
=
1
This is true for all values of the variables
except
the one(s) that makes the denominator
0
.
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