Algebra 2, 2008
34

 PAGE: 167 SET: Exercises PROBLEM: 34

The equations are

The second equation is .

Apply division property of equality: if a = b, then.

(Divide each side by negative 6)

(Cancel common terms)

(Divide: )

Substitute 5 for y in equation (1).

(Multiply: )

Apply addition property of equality: if a = b, then a + c = b + c.

(Apply Additive inverse property: - 15 + 15 = 0)

Apply division property of equality: if a = b, then.

(Divide each side by 3)

(Cancel common terms)

(Divide: )

Substitute 7 for x in equation (3).

(Multiply:)

Apply addition property of equality: if a = b, then a + c = b + c.

Apply division property of equality: if a = b, then.

(Divide each side by 5)

(Cancel common terms)

(Divide: )

The solution is .

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