$obliczenia$  

$\frac{27}{30}=\frac{9}{10}$  

 

$\frac{s}{14}=\frac{9}{10}$  

$10s=9\cdot 14$  

$s=\frac{9\cdot 14}{10}=\frac{126}{10}=12,6$  

 

$\frac{120}{g}=\frac{9}{10}$  

$9g=120\cdot 10$  

$g=\frac{1200}{9}=\frac{400}{3}=133\frac{1}{3}$        

 

$\frac{s}{120}=\frac{9}{10}$  

$10s=9\cdot 120$  

$s=\frac{9\cdot 120}{10}=9\cdot 12=108$  

 

$\frac{90}{g}=\frac{9}{10}$  

$9g=90\cdot 10$  

$g=\frac{900}{9}=100$    

 

$\frac{s}{400}=\frac{9}{10}$  

$10s=9\cdot 400$  

$s=\frac{3600}{10}=360$  

 

 

 

 

miara kąta w stopniach (s)	$27$	$12,6$	$120$	$108$	$90$	$360$
miara kąta w gradusach (g)	$30$	$14$	$133\frac{1}{3}$	$120$	$100$	$400$

 

 

$b)\frac{x}{y}=\frac{9}{10}$  

$9y=10x$