Answer:
![\frac{59}{8} or 7\frac{3}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B59%7D%7B8%7D%20%20or%207%5Cfrac%7B3%7D%7B8%7D)
Step-by-step explanation:
![\frac{80}{4} - 12\frac{5}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B80%7D%7B4%7D%20%20-%2012%5Cfrac%7B5%7D%7B8%7D)
First you need to make the 12 5/8 into an improper fraction by multiplying 12 by 8 and then adding the total by 5.
-> ![\frac{101}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B101%7D%7B8%7D)
Now you have
so you need a common denominator by multiplying the first fraction by 2
![\frac{80}{4} -> \frac{160}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B80%7D%7B4%7D%20-%3E%20%5Cfrac%7B160%7D%7B8%7D)
Then you subtract 160 - 101 which equals 59.
![\frac{59}{8} or 7\frac{3}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B59%7D%7B8%7D%20%20or%207%5Cfrac%7B3%7D%7B8%7D)
Answer:
?= 3
Step-by-step explanation:
let x = ?
18-2x=4x
6x=18x
x=3
Just switch the x and the 3