Question

Va rog repede dau coroana !!!Ex 12

Answer 1

a) Daca x/y=3/8 formam proportia derivata (x+y)/y=(3+8)/8  <=>  (x+y)/y=11/8.

b) Daca x/y=3/8 <=> x/(y-x)=3/(8-3)  <=>  x/(y-x)=3/5.

c) x/3·y = (1/3)·x/y = 1/3·3/8 = 1/8.

d) Din x/y=3/8 =>  3·y=8·x  => 9·y=3·8x=24·x

=> (8x+3y)/9y=(8x+8x)/24x=16x/24x=2/3.