The goal of all algebra equations is to isolate the variable. In 3 step you should first make sure both variables are on the same side. To do that make sure you use the inverse.
For example:
6a + 9 = 3a + 15
because 3a is positive you're going to want to subtract it.
6a + 6 = 3a + 15
-3a -3a
_______________
3a + 6 = 15
Now it's a 2 step equation and you solve it on from there.
7.12 ÷ 3 = 2.373333333 after rounding it is 2.00
ps you could have used calculator
Answer:
-12y=5y-68 true for all X
Step-by-step explanation:
-3x4y=(4+5y)-72
simplify:
-3x4y=12y
simplify:
(4+5y)-72
remove parentheses:
4+5y-72
subtract the numbers:
4-72= -68
=5y-68
-12y=5y-68
Answer:
x = 2
Step-by-step explanation:
Let me know if you have questions
Answer:
![y=-5x](https://tex.z-dn.net/?f=y%3D-5x)
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form
or ![y=kx](https://tex.z-dn.net/?f=y%3Dkx)
so
For ![x=6,y=-30](https://tex.z-dn.net/?f=x%3D6%2Cy%3D-30)
substitute
------> ![k=-30/6=-5](https://tex.z-dn.net/?f=k%3D-30%2F6%3D-5)
therefore
![y=-5x](https://tex.z-dn.net/?f=y%3D-5x)