10*log10( 0.12 * 10^(x/10)+0.44 * 10^ (y/10) +0.44 * 10^(z/10) ) - 20*log10(sqrt(0.12 * 2^(x/10-8) * 5^(x/10-10)+0.44 * 2^(y/10-8) * 5^(y/10-10)+0.44 * 2^(z/10-8) * 5^(z/10-10))/0.00002)=0