`4.(5-x)-2^3=2^4 .3`
`=>4.(5-x)-8=16 .3`
`=>4.(5-x)-8=48`
`=> 4.(5-x)=48+8`
`=> 4.(5-x)=56`
`=>5-x=56:4`
`=>5-x=14`
`=>x=5-14`
`=>x= -9`
\(4.\left(5-x\right)-2^3=2^4.3\)
4.(5−x)−8=16.3
4.(5−x)−8=48
4.(5−x)=48+8
4.(5−x)=56
5−x=56:4
5−x=14
x=5−14
x=−9