I posted it wrong before. Frustrated, sorry.
2007-02-19 22:01:17 · 8 answers · asked by Cassie C 1 in Science & Mathematics ➔ Mathematics
y = 2/9x-2/3 + 7/1
-2/3 + 21/3 = 19/3
y= 2/9x+19/3
2007-02-19 22:03:41 · answer #1 · answered by The Stig 3 · 0⤊ 0⤋
dont you remember you can do most anything to an equation so long as you do the same thing to both sides? adding 7 to both sides will isolate the y:
y-7 = 2/9x - 2/3
y = 2/9x - 2/3 +7
but 7 may be expressed as 21/3. therefor:
y = 2/9x -2/3 + 7 = 2/9x -2/3 + 21/3 = 2/9x + 19/3
2007-02-20 04:46:18 · answer #2 · answered by bignose68 4 · 0⤊ 0⤋
You need to add seven to both sides.
y - 7 = 2/9x - 2/3
y - 7 + 7 = 2/9x -2/3 + 7
In order to combine -2/3 and 7 you need to make 7 into a fraction of 3
7 whole 3/3 equals 21/3
so.
y = 2/9x - 2/3 + 21/3
y= 2/9x + 19/3
Hope that helps. Just remember, you have to find the common denominator before you add fractions together.
2007-02-19 23:38:45 · answer #3 · answered by m13 1 · 0⤊ 0⤋
this is an equation (wow that's a news flash!)
what ever you do to one side - do to the other
to get rid of the 7 - add 7 to BOTH sides (equation)
y - 7 = 2/9x - 2/3
y = 2/9x + 6 1/3
but you left out the x in your question - and we haven't solved for that, yet
2007-02-19 22:06:30 · answer #4 · answered by tom4bucs 7 · 0⤊ 0⤋
y= 2/9x+19/3
2007-02-19 23:28:57 · answer #5 · answered by KASTA 2 · 0⤊ 0⤋
y = (2/9) x - 2/3 + 7
y = (2/9) x + 7 - 2/3
y = (2/9) x + 21/3 - 2/3
y = (2/9) x + 19/3
2007-02-19 22:20:09 · answer #6 · answered by Como 7 · 0⤊ 0⤋
y-7=2/9x-2/3
9y-63=2x-6
9y=2/x+57
y=2/9x+19/3
2007-02-20 00:08:00 · answer #7 · answered by adriantheace 4 · 0⤊ 0⤋
darling, if you want to get rid of (x), you need to have 2 equations because you have 2 unknows... ;)
good luck!
2007-02-19 22:35:09 · answer #8 · answered by (sinner*saint) 2 · 0⤊ 0⤋