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9 December, 08:19

What is the value of 12 (3x + 5x), when x = 7?

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Answers (2)
  1. 9 December, 08:30
    0
    642

    Step-by-step explanation:12 (3*7+5*7)

    12 (21+35)

    12*56=642
  2. 9 December, 08:49
    0
    I'm pretty sure that it's 672

    Step-by-step explanation:

    Ok, so all you gotta do is replace x with 7. so then it would look like 12 (3 (7) + 5 (7)). then you multiply whats inside the parenthesis so that you get 12 (21+35). then you add, 12 (56). then you just multiply.
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