Question

ex 15 va rog.
P.s sunt clasa a 6 a.​

Answer 1

Răspuns:

Explicație pas cu pas:

7x /3y = 4/3

x/y = 4/3*3/7 = 4/7; y/x = 7/4

a) (2y - x)/x = 2y/x - 1 = 14/4 - 1 = 14/4 - 4/4 = 10/4 = 5/2

b) (2x - y)/y = 2x/y - 1 = 8/7 - 1 = 8/7 - 7/7 = 1/7

c) (4x - y)/x = 4 - y/x = 4 - 7/4 = 16/4 - 7/4 = 9/4