CPM Homework Help : CCA2 Problem B-38

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B-38.

Solve the following systems of equations.

$3x - 2y = 14$
$-2x + 2y = - 10$
Hint (a and b):
If you need a reminder of how to solve systems of equations, refer to problem A-7.

$y = 5x + 3$
$-2x - 4y = 10$

Which system above is most efficiently solved by using the Substitution Method? Explain.
Hint (c):
Which criteria make a system easier to solve with the Substitution Method?

Which system above is most efficiently solved by using the Elimination Method? Explain.
Hint (d):
Which criteria make a system easier to solve with the Elimination Method?

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