7 7 /30 -(5 11 / 30 -y ) = 3 19/ 30 решить

Question

7 7 /30 -(5 11 / 30 -y ) = 3 19/ 30 решить

Answer 1

77:30-х=319:30
х=77:30-319:30
х=-242:30
511:30-у=-242:30
у=753:30
у=25,1