Answer:
18° and 72°
Step-by-step explanation:
Complimentary angles form 90°
We have an angle (x) 4 times larger than the other (y).
Well actually, a system of equations isn't required, so forget about x and y, just divide 90 by 5. This gives you 18, one of the angle's measurements is 18°. Multiply 18 by 4 and get 72. The other angle's measurement is 72°.
I'm pretty sure y=1.3=0.25x
Given :

Multiply by ( 9 x 11 ) i.e. 99 on both sides,

Therefore the numeric value of x is 45 / 11.
685/5 = 137
137 doesn't factor at all, so your factors are 5 and 137.