Question

KLMN is a rectangle. Angle N measures (12a+24) Find the value of a.

Answer 1

If KLMN is a rectangle. All the angles are 90 degrees. So 90 = 12a + 24.
Subtract 24 from both sides
90 - 24 = 12a
66 = 12 a

Solve for a by dividing by 12
66/12 = 5.5

Answer 2

12a+24 = 90 because all angles in a rectangle equal 90 degrees.
Subtract 24 from both sides.
12a=66
Divide both sides by 12
a=5.5