Question

Make x the subject of the formula d( x + a ) = c( x + b )

Answer 1

d(x+a)=c(x+b)
dx+da=cx+cab
dx-cx=cb-da

Answer 2

x = (cb - da)/(d-c)

Explanation:

d( x + a ) = c( x + b )

dx + da = cx + cb

dx - cx = cb - da

x(d-c) = cb - da

x = (cb - da)/(d-c)