5x - 9 = 16
5x - 9 + 9 = 16 - 9
5x = 7
5x/5 = 7/5
x = 1 2/5
which step is wrong and can you do the equation by step to show which step is wrong.
2007-05-22 09:45:08 · 14 answers · asked by Anonymous in Education & Reference ➔ Homework Help
The second step (line), add 9 to both sides of the equation.
5x - 9 = 16
5x - 9 + 9 = 16 + 9
5x = 25
(5x) / 5 = 25 / 5
x = 5.
2007-05-22 09:48:16 · answer #1 · answered by Anonymous · 0⤊ 0⤋
You got the second step wrong. You added 9 to the left side so you need to ADD 9 to the right side.
5x - 9 = 16
5x - 9 + 9 = 16 + 9
5x = 25
5x/5 = 25/5
x = 5
2007-05-22 09:51:10 · answer #2 · answered by Leeuh Muhree 2 · 0⤊ 0⤋
5x - 9 = 16
5x - 9 = 16 to get rid of the 9 on the left hand side you must ADD 9 to the other side whatever you do to one side you must do exactly the same to the other.
5x - 9 + 9 = 16 + 9
5x = 25 divide both sides by 5 which you did correctly
x = 5
there you go if there are any other maths questions give me an email at
rowan.b1000@durhamlea.org.uk
2007-05-22 09:52:48 · answer #3 · answered by Anonymous · 0⤊ 0⤋
The second step is wrong. If you add to the left side you have to add to the right, not subtract.
5x-9=16
5x-9+9=16+9
5x=25
5x/5=25/5
x=5
2007-05-22 09:49:21 · answer #4 · answered by Shellie S 1 · 1⤊ 0⤋
2nd step is wrong.
5x - 9 = 16
5x - 9 + 9 = 16 + 9
5x = 25
x = 5
2007-05-22 09:53:36 · answer #5 · answered by j s 1 · 0⤊ 0⤋
Best answer please
you subtracted nine instead of adding it
5x-9=16
+9 +9
5x=25
/5 /5
x= 5
2007-05-22 10:00:02 · answer #6 · answered by misscalifornia 2 · 0⤊ 0⤋
5x-9=16
5x-9+9=16 + 9
5x=25
x=5
2007-05-22 09:49:00 · answer #7 · answered by Terrence W 6 · 1⤊ 0⤋
5x - 9 = 16 (Given)
5x - 9 + 9 = 16 - 9 (Wrong, should've added the 9, not subtracted.)
5x = 7 (Incorrect because previous step was incorrect.)
5x = 25 (If you did the previous step correctly, it would look like this.)
5x / 5 = 25 / 5
x = 5 This is the value of x.
2007-05-22 09:56:19 · answer #8 · answered by Huge 2 · 0⤊ 0⤋
These are quite straightforward. Yoy need to get the numbers one side of the equals side and the unknowns (x) on the other. 1) 7x + 4 = 5x + 22. 7x -5x = 22 - 4 (remember when you change sides you change signs (+ and -) 2x = 18. x = 9 2) 2(x - 5) = 32 - 4x. get rid of the brackets 2x - 10 = 32 - 4x. 2x + 4x = 32 + 10 6x + 42. x = 7 3) 6x - 8 = 83 - 7x 6x + 7x + 83 + 8 13x = 91. x = 7 4) 10(x +6) = 5(x + 19). get rid of the brackets. 10x + 60 + 5x + 95 10x - 5x = 95 - 60 5x = 35. x = 7
2016-05-20 03:08:07 · answer #9 · answered by Anonymous · 0⤊ 0⤋
The second step is wrong. In the second step, you're adding 9 to the left side while subtracting 9 from the right side of the equation.
2007-05-22 09:49:37 · answer #10 · answered by atomicjohnson 3 · 0⤊ 0⤋