2x-y=11 ,6x-3y=15
4x+4y=26
-4y. -4y
4x=22
4. 4. divided
x=5.5 if its wrong and fix something that's wrong
Hello!
<h3><em><u>Answers</u></em></h3>
1.
Simplest form: ![\frac{9}{10}](https://tex.z-dn.net/?f=%5Cfrac%7B9%7D%7B10%7D)
2.
Simplest form: ![\frac{15}{16}](https://tex.z-dn.net/?f=%5Cfrac%7B15%7D%7B16%7D)
3.
Simplest form: ![\frac{1}{1}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B1%7D)
4.
Simplest form: ![\frac{3}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B5%7D)
5.
Simplest form: ![\frac{3}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B5%7D)
6.
Simplest form: ![\frac{3}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B4%7D)
<h3><em><u>Explanation:</u></em></h3>
Simply add the numerators of the like fractions together. The denominators remain the same.
I believe there is something wrong with the fourth equation. It shouldn"t be equal the first equation. It should be: -ac = - db
Let's calculate the linear equations of AB & CD
x/(x-b) = (y-a)/y
xy = (x-b)(y-a)
-ax-by+ab=0
y=-ax/b+a
(x+c)/x= y/(y+d)
(x+c)(y+d)=xy
dx+cy+cd=0
y=-dx/c - d
-a/b = -d/c in other words:
-ac = -db (Resembling the fourth equation)
<span>When your income is more than your expenses, y</span>ou have surplus