Chapter 4.4, Problem 4E

Linear Combinations In Exercises 1-4, write each vector as a linear combination of the vectors in $S$(if possible).

$S=\left\{\left(6,-7,8,6\right),\left(4,6,-4,1\right)\right\}$

$\left(\text{a}\right)$ $u=\left(2,19,-16,-4\right)$ $\left(\text{b}\right)$ $v=\left(\frac{49}{2},\frac{99}{4},-14,\frac{19}{2}\right)$

$\left(\text{c}\right)$ $w=\left(-4,-14,\frac{27}{2},\frac{53}{8}\right)$ $\left(\text{d}\right)$ $z=\left(8,4,-1,\frac{17}{4}\right)$