👤

Aflati y din : a) m/n = y/p
b) y - 2/ a = 1/5a


Răspuns :

a) m/n=y/p=>
m*p=n*y=>
y=(m*p)/n

b)( y-2)/a =1/5a =>(y-2)*5a=a*1
(y-2)*5a=a
y-2=5*a/a
y-2=5
y=5+2
y=7