Two angles are supplimentarty. One angle is 5° less then four times the other . Find the angles

Question

Must

find an equation 

 

Answer 1

The two angles that are SUPPLEMENTARY (note spelling) could be x and 180-x.

 

If x+5 = 4(180-x) ... this represents "one angle is 5^o less THAN (not then) four times the other"

then we have x+5 = 720 -4x

5x = 715

x = 143, so the other angle, its supplement, is 37^o.

Answer 2

4x-5 ~ 180 x~37,4x-5=143