5/(3a)+4b=(1-2c)/d53a+4b=1−2cd
=>d*(5/(3a)+4b)=1-2c⇒d⋅(53a+4b)=1−2c
=>(5d)/(3a)+4bd=1-2c⇒5d3a+4bd=1−2c
=> (5d)/(3a)+4bd-1=-2c⇒5d3a+4bd−1=−2c
=> ((5d)/(3a)+4bd-1)/-2=c⇒5d3a+4bd−1−2=c
=> (5d)/(3a*(-2))+(4bd)/-2-1/-2=c⇒5d3a⋅(−2)+4bd−2−1−2=c
=> (5d)/(-6a)-(4bd)/2+1/2=c⇒5d−6a−4bd2+12=c
=>c=(5d)/(-6a)-(4bd)/2+1/2⇒c=5d−6a−4bd2+12
=>c=-(5d)/(6a)-(4bd)/2+1/2⇒c=−5d6a−4bd2+12