Please seriously you've gotta help me!!! )': pleeeaaasse?
2007-11-22 07:17:18 · 16 answers · asked by ♥ஜღAubreyღஜ♥ 2 in Science & Mathematics ➔ Mathematics
x=-2.
3+4x=9x+13....get the variables on one side and hte numbers on the other side
-10=5x.....divide each side by 5 to isolate x
x=-2
2007-11-22 07:20:57 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Download a program called Advanced Calculator at www.advcalc.tk.
Run the program and type "solve 3+4x=9x+13" without quotes.
You will get the answer!
2007-11-22 07:23:48 · answer #2 · answered by nivik 3 · 0⤊ 0⤋
3 + 4x = 9x + 13
=> 9x -- 4x = 3 -- 13
=> 5x = -- 10
=> x = -- 10/5 = -- 2
2007-11-22 07:22:07 · answer #3 · answered by sv 7 · 0⤊ 0⤋
3+4x=9x+13 subtract 4x from both sides
3+4x-4x=9x-4x+13 cancels out the 4x on left side and add 9x-4x
3=5x+13 subtract 13 from both sides
-13+3=5x+13-13
-10=5x divide by 5 on both sides
-10/5=5x/5
-2=x the answer to x
x=-2
2007-11-22 07:31:14 · answer #4 · answered by Anonymous · 0⤊ 0⤋
3 + 4x = 9x + 13
4x = 9x + 10 (-3 on both side)
-5x = 10 (-9x on both side)
x = -2 (divide by -5)
2007-11-22 07:22:14 · answer #5 · answered by norman 7 · 0⤊ 0⤋
you want to put all the number on one side and all the variables on the other so...
3+4x=9x+13
goes to -10+4x=9x
then -10=5x
so 2=X!!!
2007-11-22 07:26:29 · answer #6 · answered by Alina Z 2 · 0⤊ 0⤋
3+4x=9x+13
4x=9x+10
-5x=10
x=-2
2007-11-22 07:21:49 · answer #7 · answered by Anonymous · 0⤊ 0⤋
x=-2
2007-11-22 07:25:06 · answer #8 · answered by Mateo 3 · 0⤊ 0⤋
4x-9x=13-3
-5x=10
-x=2
x=-2
2007-11-22 07:30:09 · answer #9 · answered by xxSSxx 1 · 0⤊ 0⤋
3+4X=9X+13
-3 - 3
4x=9x-10
-9x -9x
-5x=10
divide by 2
x= -2
2007-11-22 07:23:39 · answer #10 · answered by Anonymous · 0⤊ 0⤋