(((x + y) / 3) + (1 / x)) / (5 + (15 / x))
The best way is to make it one fraction.
Multiply by ((3x/3x) / (3x/3x)) to remove the other fractions.
((x(x + y)) + 3(1)) / (5(3x) + 3(15))
(x^2 + xy + 3) / (15x + 45)
Then factor to simplify
(x^2 + xy + 3) / (3(x + 15))
Answer:
none is a solution...the solution.is -3
Answer is: 32 nickels and 23 dimes.
<span>x - number of nickels .
y -number of dimes.
two equations in two unknowns:
1) x + y = 55
2) 0,05x + 0,1y = 3,90.
</span>nickel is a five-cent coin.
dime is a ten-cent coin.<span>
solve equation 1) for x and substitute for x in equation 2)
x = 55 - y
0,05</span>·(55 - y) + 0,1y = 3,90<span>2,75 - 0,05y + 0,1y = 3,90
0,05y = 1,15
y = 23.
x = 55 - 23 = 32.</span>
The point slope form:

We need to find the slope. To find the slope we can use the following formula:

Use the points <span>(-5, 6) and (0, 1) and plug it into our slope formula and solve:
</span>


So our slope is -1 which means m = slope = -1
Now that we have our slope lets create the point slope form
Our point slope form equation is

Remember
m = slope = -1. Also, we are going to use the point (-5,6).
First insert the m = slope = -1 number where m is located

Next, insert the -5 from (-5,6) where

is located and the 6 from (-5,6) where

is located.


Now simplify


<-------Answer