Level:
Project ID:
2000019206
Accepted:
0
Clonable:
0
Easy:
0
For what value of a real number \(a\) has the following system infinitely many solutions?
\[ \begin{alignedat}{80}
&x & + &2y & +& z & = 8 & & & & & &
\\ &2x & & & -& z & = -1 & & & & & &
\\ &7x & + & 10y & +& 4z & = a & & & & & &
\\\end{alignedat}\]
\(39\)
\(73\)
\(-39\)
\(56\)