20 and 10.
I can't explain this, because of the fact that I have not learned this yet, and I might be wrong. But I hope I'm not and I hope I helped! ☺
Multiply both sides of the equation by 20, the lowest common denominator of 5,4,2.
Add 4 and 3 to get 7.
Use the distributive property to multiply −4 times x 4/7.
Multiply −4 by 4/7.
![\large\displaystyle\text{$\begin{gathered}\sf \bf{-4x-7=10(2\times2+1) \ \ \to \ \ [Multiply \ 2\times2] } \end{gathered}$}](https://tex.z-dn.net/?f=%5Clarge%5Cdisplaystyle%5Ctext%7B%24%5Cbegin%7Bgathered%7D%5Csf%20%5Cbf%7B-4x-7%3D10%282%5Ctimes2%2B1%29%20%5C%20%5C%20%5Cto%20%5C%20%5C%20%5BMultiply%20%5C%202%5Ctimes2%5D%20%7D%20%20%5Cend%7Bgathered%7D%24%7D)
![\large\displaystyle\text{$\begin{gathered}\sf \bf{-4x-7=10(4+1) \ \ \to \ \ [Add] } \end{gathered}$}](https://tex.z-dn.net/?f=%5Clarge%5Cdisplaystyle%5Ctext%7B%24%5Cbegin%7Bgathered%7D%5Csf%20%5Cbf%7B-4x-7%3D10%284%2B1%29%20%5C%20%5C%20%5Cto%20%5C%20%5C%20%5BAdd%5D%20%7D%20%20%5Cend%7Bgathered%7D%24%7D)
![\large\displaystyle\text{$\begin{gathered}\sf \bf{-4x-7=10\times5 \ \ \to \ \ [Multiply] } \end{gathered}$}](https://tex.z-dn.net/?f=%5Clarge%5Cdisplaystyle%5Ctext%7B%24%5Cbegin%7Bgathered%7D%5Csf%20%5Cbf%7B-4x-7%3D10%5Ctimes5%20%5C%20%5C%20%5Cto%20%5C%20%5C%20%5BMultiply%5D%20%7D%20%20%5Cend%7Bgathered%7D%24%7D)
Add 7 to both sides.
![\large\displaystyle\text{$\begin{gathered}\sf \bf{-4x=-50+7 \ \ \to \ \ [Add] } \end{gathered}$}](https://tex.z-dn.net/?f=%5Clarge%5Cdisplaystyle%5Ctext%7B%24%5Cbegin%7Bgathered%7D%5Csf%20%5Cbf%7B-4x%3D-50%2B7%20%5C%20%5C%20%5Cto%20%5C%20%5C%20%5BAdd%5D%20%7D%20%5Cend%7Bgathered%7D%24%7D)
Divide both sides by −4.
The fraction 
can be simplified to 
by removing the negative sign from the numerator and denominator.
simplify
<h2>{ Pisces04 }</h2>
Y = -3x+5
That’s the equation
Answer:
D
Step-by-step explanation:
it represents it own right
F(x) = x^2 + 2x -1
Domain all real number
Range: all real numbers equal or greater than -2.
To find the range you need to find the vertex of the parabole, which is (-1,-2) and use the fact that, given that the coefficient of x^2 is positive, the funcion open upwards (which means that the vertex is a global minimum).
To find the vertex you use the quadratic formula to find the roots and then the x-coordinate of the vertex is in the middle of the two roots.
