linear equations

Question

Recall that two angles are complementary if the sum of their measures is? 90°. Find the measures of two complementary angles if one angle is five times the other angle.

Answer 1

Let x = 1 angle, the other angle is 5x; so, 5x + x = 90; 6x = 90; x = 15; so the other angle is 5 X 15 = 75.

check: 75 + 15 = 90.