Question

ex 16 punctul a
va rog mult​

Answer 1

Gata...acum e bine....

Answer 2

Explicație pas cu pas:

|1/2x-2,5|=|7 1/2-3/4x|

|1/2x-5/2|=15/2-3/4x|

1/2x-5/2=15/2-3/4x -> 5x=40 ; x=8

1/2x-5/2=-(15/2-3/4x) -> x=20

S={8;20}