Please explain the steps. (x is a variable)
5x+y/a =2, slove for a
2006-10-29 08:02:46 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
5x + y/a = 2 ... multiply all parts by a.
5ax + y = 2a .. subtract y and 2a from both sides.
5ax - 2a = -y ... factor out an a on the left side.
a (5x - 2) = -y ... divide by (5x - 2) on both sides.
a = -y / (5x - 2).
All done!! :-)
2006-10-29 08:14:52 · answer #1 · answered by TripleFull 3 · 0⤊ 0⤋
Hi,
5x + y/a = 2
subtract 5x from each side to move it over
y/a = 2-5x
flip both sides over (take reciprocal) we can do this as long as we do it to both sides. (We are also assuming that neither a, nor y are equal to zero, and that x isn't equal to 2/5 because you can't divide by zero.)
a/y = 1/(2-5x)
then just multiply both sides by y to isolate a
a = y/(2-5x)
Hope that helps,
Matt
2006-10-29 08:16:07 · answer #2 · answered by Matt 3 · 0⤊ 0⤋
5x+y/a=2 ; a≠0 => **
-(5x-2)=y/a<=>
(-5x+2)/y = 1/a;y≠0 => ***
a=y/(-5x+2) ; *(-5x+2)≠0 =>x≠2/5 ****
Because of ***
if y=0 =>x= 2/5=>
a can take any value in R\{0} because of **
===================
because of *** &****
if (x,y)≠(2/5,0)=>
a=y/(-5x+2) we check to see if it's ok with ** and we can see for y≠0 => a≠0 so ok
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2006-10-29 08:53:08 · answer #3 · answered by Broden 4 · 0⤊ 0⤋
You have to know what y and a equals it means 5 times x plus y divided by a equals 2
2006-10-29 08:12:09 · answer #4 · answered by ♥Olivia 69♥ 2 · 0⤊ 2⤋
Do you mean (5x+y)/a = 2? If so, then a = 2/(5x+y).
If you mean (5x) + (y/a) = 2, then y/a = 2 - 5x, so
a = y / (2 - 5x).
2006-10-29 08:05:13 · answer #5 · answered by James L 5 · 0⤊ 1⤋
well first you have to multiply (A) on both sides
so you get
A(5x +Y/A)=2(A)
then divide by 2
so (5x +Y) /2=A
call me if you need help more help
954-270-7434
2006-10-29 08:09:13 · answer #6 · answered by Anonymous · 0⤊ 1⤋
5x+y/a=2 ----subtract both sides by 5x
y/a=2-5x ----multiply both sides by a
y=(2-5x )a ----divide both sides by (2-5x)
a= y/(2-5x) ---- then u get a
2006-10-29 08:10:00 · answer #7 · answered by cute little white sheep 1 · 0⤊ 0⤋
multiply both sides by a, subtract y from both sides and then divide everything by 5
2006-10-29 08:05:28 · answer #8 · answered by Anonymous · 0⤊ 1⤋
You can't solve this unless you know the value of the constants y and a.
2006-10-29 08:05:10 · answer #9 · answered by John H 4 · 0⤊ 1⤋
5 x 2 = 10 + 2 = 12 / 6 = 2 so
x = 2 , y = 10 and a= 2
idk ?
2006-10-29 08:14:21 · answer #10 · answered by Anonymous · 0⤊ 2⤋