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Mathematics
Problem
For the pair of equations
2
x
−
3
y
=
5
2x - 3y = 5
2
x
−
3
y
=
5
and
x
+
y
=
4
x + y = 4
x
+
y
=
4
, which equation would you choose to express one variable in terms of the other for quicker calculation, and give one reason for your choice.
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