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Solve for the first variable in one of the equations, then substitute the result into the other equation.
a
=
−
2
,
b
=
5
a
=
-
2
,
b
=
5
T
Answer:

Step-by-step explanation:
We are given the following expression in the question:

a)

which is not equivalent to the given expression.
b)

which is equivalent to the given expression
c)

which is equivalent to the given expression.
d)

which is not equivalent to the given expression.
e)

which is equivalent to the given expression.