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7 September, 08:28

Which expressions have a value of 33

A. 15 + (8*3-6)

B. (30+6) / 6+3*2^2

C. 40-[5 * (3+1) + 8]

D.[ (3+5) * 2-5]*3

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Answers (1)
  1. 7 September, 09:10
    0
    Let's look through the options one by one:

    A. 15 + (8*3-6)

    inside the parentheses, we multiply first

    15 + (24-6)

    now simplify the rest of the parentheses

    15+18

    33

    so answer "A'' equals 33

    B. (30+6) / 6+3*2^2

    we simplify the inside of the parentheses

    36/6+3*2^2

    we simplify the exponent

    36/6+3*4

    6+12

    18

    So NO, answer "B" is not correct

    C. 40-[5 * (3+1) + 8]

    all the way on the inside of the parentheses,

    40-[5*4+8]

    multiplying comes before adding, so

    40-[20+8]

    inside the brackets,

    40-28

    12

    So answer "C" is also incorrect

    D. [ (3+5) * 2-5]*3

    inside the parentheses

    [8*2-5]*3

    multiplying before subtracting

    [16-5]*3

    11*3

    33

    So the only answers that equal 33 are answer "A" and answer "D" equal 33
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