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16 September, 17:02

2x+3=5x-42 what is the number that belongs in the green box

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  1. 16 September, 19:35
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    Objective: Solve 2x + 3 = 5x - 42 for x.

    Step 1: Subtract 3 from both sides.

    2x + 3 = 5x - 42

    2x = 5x - 45

    Step 2: Subtract 5x from both sides.

    2x = 5x - 45

    -3x = - 45

    Step 4: Divide both sides by - 3.

    -3x = - 45

    x = 15

    Answer:

    x = 15
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