Does the answer help you?
Answer:
![y=\frac{15-3x}{4}](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B15-3x%7D%7B4%7D)
Step-by-step explanation:
Here we are given an equation in x and y and we are required to solve it for y
we have
![3x+4y=15](https://tex.z-dn.net/?f=3x%2B4y%3D15)
subtracting 3x from each sides we get
![3x-3x+4y=15-3x](https://tex.z-dn.net/?f=3x-3x%2B4y%3D15-3x)
![4y=15-3x](https://tex.z-dn.net/?f=4y%3D15-3x)
now we divide both sides by 4 we get
![\frac{4y{4}=\frac{15-3x}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B4y%7B4%7D%3D%5Cfrac%7B15-3x%7D%7B4%7D)
![y=\frac{15-3x}{4}](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B15-3x%7D%7B4%7D)
Hence A) is our right answer.
The answer is 3/10 ( hope this helps)
The number 9.636363 is rational