The first equation is 
(Equation 1)
The second equation is 
(Equation 2)
Putting the value of x from equation 1 in equation 2.
we get,
by simplifying the given equation,
Using discriminant formula,
Now the formula for solution 'x' of quadratic equation is given by:
Hence, these are the required solutions.
Answer:
5w/17
10 books
Step-by-step explanation:
Initial Amount had = $6w
Cost per book = $17
Amount had after book purchase = $w
The number of books purchased :
(Initial amount had - amount had after purchase) / cost per book
($6w - $w) / $17
$5w / $17
Number of books purchased = 5w/17
B.) if w = 34
Number of books purchased :
(5*34) / 17
= 170 / 17
= 10 books
5x + 8 = 4
5x = -4
x = -4/5
3(-4/5) = -2.4
Solution: 3x = -2.4
X will equal 0 and y will equal -3
