Question

3,1*(3у+2,503)-17,41=57,3​

Answer 1

$3,1(3y+2,503)-17,41=57,3\\9,3y+7,7593-17,41=57,3\\9,3y-9,66507=57,3\\9,3y=57,3+9,6507\\9,3y=66,9507\\y=7,199$