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Rational Expressions
easy
0:00.0
Simplify:
a
−
b
b
−
a
\dfrac{a - b}{b - a}
b
−
a
a
−
b
(assume
a
≠
b
a \neq b
a
=
b
).
A
−
1
-1
−
1
B
1
1
1
C
0
0
0
D
a
−
b
a - b
a
−
b
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