Rozwiąż układy równań. b) [5y= 2/5 [ x+y = 2 2/5   c) [4y - x = 6 [17y = 0   d) [a = b [ 2a + b +9   e) [u = 4v [ 5u - v = 10   f) [3r = s [3r + s + 24   PS. [ [ to są KLAMERKI   proszę o pomoc... SZYBKO.... z góry dzięki!!;**

b){5y=0,4 {y=2,4-x {5*(2,4-x)=0,4 {y=2,4-x {12-5x=0,4 {y=2,4-x {-5x=-2 {y=2,4-x {x=0,4 {y=2,4-0,4 {x=0,4 {y=2 c) [4y - x = 6 [17y = 0 {4y-x=6 {y=0 {-x=6 {y=0 {x=-6 {y=0 d) [a = b [ 2a + b +9 {a=b {3b=9 {a=b {b=3 {a=3 {b=3 f) [3r = s [3r + s = 24 {3r=s {2s=24 {3r=s {s=12 {3r=12 {s=12 {r=4 {s=12