Question

aflati masura a doua unghiuri complementare stiind ca unul este cu 15 grade mai mic decat 1 supra 4 din celalalt

Answer 1

a+b= 90
a=1/4*b-15
=>b/4-15 + b=90 => 5b/4=90+15 => 5b=105*4=> 5b=420=> b=420/5=84 => a=6
Proba: 6=1/4 *84-15=>6=6 Adevarat.

Answer 2

x+$\frac{1}{4}$*x-15 =90
5/4 *x=90+15 , 5/4 *x=105  5x=105*4 x=84grade
y=90-84=6