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3 July, 00:31

Anna and Belle are asked to solve - 2x - 15 = 6x + 9. Identify where one of them made an error.

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  1. 3 July, 03:11
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    Ok so first you need to identify what you are looking for ... you need to find x.

    to do that you need toge it on one side. so cancel out the "-2x" on the left side by adding 2x (on both sides, don't forget you add common variables). now you should have something like this ...

    -15=8x+9

    now all you have to do is get rid of the 9 by subtracting 9 on both sides

    you should have

    -24=8x

    With that, all you have to do now is divide 8 into both sides and it should look like a fraction now

    -24/8=8x/8

    the 8x/8 will cancel out the 8 and you will have

    -24/8=x

    Simplify that and you should get

    -3=x

    need me to explain it with fewer words?
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