Объяснение:

{(х+у)/8 + (х-у)/6=4 •24

{(3х+у)/4 - (2х-5у)/3=5 •12

{3(х+у)+4(х-у)=96

{3(3х+у) -4(2х-5у)=60

{3х+3у+4х-4у=96

{9х+3у-8х+20у=60

{7х-у=96 у=7х-96

{х+23у=60

х+23(7х-96)=60

х+161х-2208=60

162х=60+2208

162х=2268

х=2268:162

х=14

у=7•14-96

у=98-96

у= 2

(14;2)