Question

Please help me..I don't understand how to solve problems like

4y+2x=18 find y
Can someone help me understand?
*I made that problem up I do not know if it works*

Answer 1

remember you can do ANYTHING to an equation as long as you do it to both sides

isolate the y and then divide by the coefient
the basic way to simplify it is if you did
ax+by=c
y=
`(-a)/(b)x+ (c)/(b)`

but memorization is no fun so



4y+2x=18
minus 2x both sides
4y=-2x+18
divide both sides by 4

`y= (-1)/(2)x+ (9)/(2)`

Answer 2

Okay. So first you subtract 2x from each side. That will give you 4y= -2x+18 (you want to get y by itself). Then you divide both sides by 4. It should equal> y= 1/2x +9/2