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3 February, 19:08

Jill solved the inequality - x/4 < (x+2) / 3 Her solution is shown: Step 1 : - 3x<4x+8 Step 2: - 3x-4x <8 Step 3: - 7x<8 Step 4: x< - 8/7 Explain the mistake Jill made while solving for x.

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  1. 3 February, 19:14
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    They did not flip the inequality

    Step-by-step explanation:

    -x/4 < (x+2) / 3

    Multiply each side by 3

    -3x<4x+8

    Subtract 4x from each side

    -3x-4x <4x-4x + 8

    -3x-4x<8

    Combine like terms

    -7x<8

    Divide by - 7. Remember to flip the inequality

    -7x/-7 > 8/-7

    x > - 8/7
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