Very very simple math help needed?

Question

2x+6=x+9

........ I'd wanna say x=5 but I am probably far off.

Answer 1

2x + 6 = x + 9

subtract 6 from both sides
2x = x + 3

subtract x from both sides
x = 3

Answer 2

x=3

Answer 3

This is simple algebra:

2x + 6 = x + 9

Isolate x by moving all the x's to one side. I will move the x over by subtracting x from both sides, effectively removing the x from the right side and leaving 2x - x on the left side which equals x.

So now we have x + 6 = 9

Now we want x alone, and to do this we move the number on the left to the right by subtracting 6 from both sides:

x + 6 - 6 = 9 - 6

The sixes cancel out leaving x = 9 - 6 which equals 3.

Therefore x = 3

Answer 4

The others have shown how to solve it (to get x=3).

To check your own guess of 5 you just needed to replace x with 5 in the original equation...
2 (times) 5 + 6 = 5 + 9

Left hand side is 10 + 5, which is 16 (do the multiplication before the addition).

Right hand side is 14.

So x=5 doesn't work.


(edit: OK, so not all the others showed you how to get x=3 ;-) )

Answer 5

Hi Subtract 9 from both sides. 2x-3 =x. Can you finish?

Answer 6

2x + 6 = x + 9
Collect like terms on opposite side, changing signs.
2x - x = 9 - 6
Reduce to simplest terms.
x = 3
How did you get 5? You didn't reverse signs.

Answer 7

2x+6=x+9

Subtract x from both sides, then subtract 6 from both sides.

x = 3
.

Answer 8

2x+6 = x+9
2x-x+6 = 9
1x +6=9
1x = 9-6
x=3

Answer 9

2x+6=x+9

Put like terms on one side:

x=5

Good job. You're right

Answer 10

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