Answer:
B. 
Step-by-step explanation:
We have been given a rational expression 
and we are asked to simplify our rational expression.
We can see that our denominators are not equal. Since the two denominators do not share any common factors, the common denominator is simply the product of these two denominators.
To keep the value of expression same we will multiply the same quantity with numerators and denominators.
Now let us simplify our expression using FOIL.
Now we have same denominators, so we can add our numerators.
Now let us combine like terms.
Therefore, the simplest form of our given rational expression will be and option B is the correct choice.
Answer:
add 18 to both sides, giving you 3x = 96
For this case, the first thing we must do is define variables:
x: unknown number (1)
y: unknown number (2)
We now write the equations that model the problem:
their sum is 6.1:
their difference is 1.6:
Solving the system we have:
We add both equations:
Then, we look for the value of y using any of the equations:
Answer:
The numbers are:
If you would like to solve the equation 4/5 * x = 2/5, you can calculate this using the following steps:
4/5 * x = 2/5 /*5
4 * x = 2 /4
x = 2/4
x = 1/2
The correct result would be 1/2.
