97,5*(у-36,1)=146,25

97.5 * (y - 36.1) = 146,25
97.5y - 97.5 * 36.1 = 146.25
97.5y = 146.25 - 97.5 * 36.1
y = (146.25 - 97.5 * 36.1) / 97.5 = -34.6