Please help me solve this one....I just don't understand how to do this.
2007-08-25 04:19:25 · 16 answers · asked by isis0813 1 in Science & Mathematics ➔ Mathematics
Thank you all!!
I just started collage algebra..never took it in high school either! anyway, it's been 15 years since high school. wouldn't remember if I did take it!! lol
2007-08-25 04:32:41 · update #1
You can't actually find a discrete (one) value for Y because you have two unknown variables (x and y) and only one equation. However, you can find out what Y is equal to relative to X. You isolate Y on one side of the equation, by applying the same actions to both sides of the =:
5X+6Y=18
1. Subtract 5X from both sides =
6Y=18-5X
2. Divide both sides by 6 =
Y=(18-5X)/6 OR Y=(18/6) - (5/6)X
2007-08-25 04:25:36 · answer #1 · answered by Hal L 2 · 2⤊ 0⤋
Here is how you isolate Y
5x + 6y = 18
move the 5x to the other side by inverting
6y = 18 - 5x
do the same with the 6 x y by deviding everything by 6
this would look like this
6y / 6 = (18 - 5x) /6
we know that 6 X Y / 6 is the same as simply Y so simplified...
y = (18 - 5x) / 6
Hope this helps.
2007-08-25 04:53:29 · answer #2 · answered by Keith H 1 · 0⤊ 0⤋
The given equation gives the value of y in terms of x and gives the value of x in terms of y.
5x + 6y = 18
6y = 18 - 5x
y = [18 - 5x] / 6
Now different values of y can be obtained for different value of x.
2007-08-25 04:27:51 · answer #3 · answered by Indian Primrose 6 · 0⤊ 0⤋
5x + 6y = 18
try to isolate the term with the 'y'
what you can do first is take the 5x term to the other side.
6y = 18-5x
Now to solve for y, divide both sides by 6
y = (18-5x) / 6
There you go!
2007-08-25 04:25:21 · answer #4 · answered by apatel1488 2 · 1⤊ 0⤋
5x + 6y = 18
Transpose 5x
5x + 6y = - 5x + 18
6y = - 5x + 18
Divide both sides of the equatio by 6
6y / 6 = - 5x / 6 + 18 / 6
y = - 5/6x + 3
- - - - - - - -s-
2007-08-25 04:32:17 · answer #5 · answered by SAMUEL D 7 · 0⤊ 0⤋
5x +6y = 18
6y = 18 - 5x
y = (18 - 5x)/6
You can not get an actualy number unless you have a second equations. so y = (18 - 5x)/6 is the anwser.
2007-08-25 04:25:20 · answer #6 · answered by Anonymous · 1⤊ 0⤋
When something says "solve for [variable]", you just rearrange the equation so that it's in terms of [variable]. This means adding, subtracting, multiplying, and dividing to get the variable by itself on one side of the equation.
5x + 6y = 18
6y = 18 - 5x
6y/6 = (18 - 5x)/6
y = (18 - 5x)/6
2007-08-25 04:24:51 · answer #7 · answered by supensa 6 · 1⤊ 0⤋
5x Y 18
2016-12-17 17:39:19 · answer #8 · answered by gillerist 4 · 0⤊ 0⤋
since there is no other equation so we cannot find value of x and y but
It is a linear equation that represents a line on graph paper u can draw a line with the help of this equation like below
6y=18-5x,
y=(18-5x)/6
now, if x=0 then y= 3,if x=3 then y= 1 so u can draw a line with the help of this equation plot this value on graph paper
2007-08-25 04:35:14 · answer #9 · answered by sharad s 2 · 0⤊ 0⤋
5x + 6y = 18
5x + 6y - 5x = 18 -5x
6y = 18 - 5x
6y/6 = 18 - 5x/6
y = 18 -5x/6
2007-08-25 04:28:44 · answer #10 · answered by Anonymous · 0⤊ 0⤋