\title{Sustitución-prioridad}
\language{es}
\range{-5..5}
\author{Guerimand Fabrice}
\email{fwguerima@free.fr}
\computeanswer{no}
\format{html}
\precision{100}

\integer{a=random(-1,1)*random(2..15)}
\integer{b=random(-1,1)*random(2..15)}
\integer{c=random(-1,1)*random(2..15)}
\matrix{listinc=a,b,c
x,y,z
u,v,w}
\text{listinc=row(random(1,2,3),\listinc)}
\text{a1=item(1,\listinc)}
\text{a2=item(2,\listinc)}
\text{a3=item(3,\listinc)}

\matrix{don=\a1\a2+\a3,(\a)*(\b)+(\c)
\a1+\a2\a3,(\a)+(\b)*(\c)
\a1(\a2+\a3),(\a)*(\b+(\c))
(\a1+\a2)\a3,(\a+(\b))*(\c)
\a1\a2-\a3,(\a)*(\b)-(\c)
\a1-\a2\a3,(\a)-(\b)*(\c)
\a1(\a2-\a3),(\a)*(\b-(\c))
(\a1-\a2)\a3,(\a-(\b))*(\c)}
\integer{n=random(1..8)}
\text{list=row(\n,\don)}
\text{enonce=item(1,\list)}
\integer{result=item(2,\list)}


\statement{Para \(\a1=\a , \a2=\b , \a3=\c), calcular la expresión siguiente: <center>\(\enonce).</center>}


\answer{Respuesta}{\result}{type=numexp}
