Question

(15000-y)*4-9000=27000 решение

Answer 1

(15000-у)*4-9000=27000

60000-4у-9000=27000

-4у=27000-60000+9000

-4у=-24000

у=-24000:-4

у=6000

Answer 2

60000-4y-9000=27000
4y= 24000
y=6000