2006-09-13 16:24:20 · 7 answers · asked by britiani j 1 in Science & Mathematics ➔ Mathematics
This is absolutely the LAST homework problem I will do for you.
2x - 4x + 9 = 11
-2x + 9 = 11
-2x + 9 - 9 = 11 - 9
-2x = 2
-2x / -2 = 2 / -2
x = -1
Now we plug the answer back in the problem and see if it works:
2 (-1) - 4 (-1) + 9 = 11
-2 - (-4) + 9 = 11
-2 + 4 + 9 = 11
11 = 11
2006-09-13 17:24:30 · answer #1 · answered by ashcatash 5 · 0⤊ 0⤋
x=-1
2006-09-13 19:01:23 · answer #2 · answered by curiouscat 3 · 0⤊ 0⤋
first you add all the like terms together (the x's)
which gives you
-2x+9=11
then, because you have to get the x by itself you add -9 to both sides (this eliminates the 9 that is on the side with the x)
which gives you
-2x=2
then you divide both sides by -2 because that gets rid of the exponent on the x
so the answer is
x=-1
2006-09-13 16:35:07 · answer #3 · answered by imwearingnewsox 2 · 1⤊ 0⤋
x= -1
:-)
2006-09-13 16:40:54 · answer #4 · answered by Emily L 1 · 0⤊ 0⤋
2x-4x+9=11
2x-4x=2
-2x=2
-2x/2=2/2
-x=1
x=-1
2006-09-13 16:28:05 · answer #5 · answered by mattymomostl 3 · 1⤊ 0⤋
-2x=2
x = -1
2006-09-13 16:31:45 · answer #6 · answered by cyanne2ak 7 · 0⤊ 0⤋
Good Lord man...TELL YOUR TEACHER that you do NOT understand this stuff and get additional help...You will thank yourself in the very near future!!!!!
2006-09-13 17:22:35 · answer #7 · answered by bart4play 3 · 0⤊ 0⤋