\(\left(27-x\right)+\left(15+x\right)=x-24\)
\(27-x+15+x=x-24\)
\(-x+x-x=-24-27-15\)
\(-x=-66\)
\(x=66\)
(27-x) +(15+x)=x-24
<=>\(27-x+15+x=x-24\)
<=>\(\left(-x\right)+x-x=-2-15-27\)
<=>\(-x=-44\)
<=>\(x=44\)
Vậy x=44
(27-x)+(15+x)=x-24
27-x+15+x=x-24
42=x-24
x=42+24
x=66