Answer:
36/5
Step-by-step explanation:
x/3 + 6 -2x = -6
multiply the whole equation by 3 to get rid of the denominator of the first x term.
x+18-6x = -18
move x terms to one side and numerical terms to the other, subtract 18 from both sides in this case
x+18-6x-18=-18-18
x-6x = -36
simplify
-5x = -36
divide both sides by -5 to isolate x
x = -36/-5
=36/5
I got 29.2 (I also rounded it to the nearest tenth for u)
Answer:
![x=12](https://tex.z-dn.net/?f=x%3D12)
Step-by-step explanation:
By definition, supplementary angles add up to 180 degrees. Therefore, we can set up the follow equation to solve for
:
![10x+60=180,\\10x=120,\\x=\boxed{12}](https://tex.z-dn.net/?f=10x%2B60%3D180%2C%5C%5C10x%3D120%2C%5C%5Cx%3D%5Cboxed%7B12%7D)
X-the $5 bills
y-the $10 bills
x+y=20
5x+10y=120
It's a system.