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Spring98

  • one year ago

Maya solved an equation incorrectly, as shown below: Step 1: 4x = 28 Step 2: x = 28 – 4 Step 3: x = 24 Which statement best explains why Step 2 is incorrect in Maya's solution? She did not add 4 to 28. She did not multiply 28 by 4. She did not divide 28 by 4. She did not multiply 28 four times.

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  1. Nnesha
    • one year ago
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    4 times x = 28 to cancel oout 4 what would u do ? subtract add multiply or divide ?

  2. Michele_Laino
    • one year ago
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    Maya has to divide by 4, not subtract 4

  3. Spring98
    • one year ago
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    divide 4 with what number?

  4. Michele_Laino
    • one year ago
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    4 is a factor not an addend so Maya has to divide both sides of her equation by 4, like this: \[\Large \frac{{4x}}{4} = \frac{{28}}{4}\]

  5. Spring98
    • one year ago
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    the x would equal 7. so 4*7=28

  6. Michele_Laino
    • one year ago
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    no, the value of x, is: x=28/4=... since we have: |dw:1433355383651:dw|

  7. Spring98
    • one year ago
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    then what do we do?

  8. Michele_Laino
    • one year ago
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    as I wrote before, we have to divide both sides of our equation by 4, so we can write: \[\large \frac{{4x}}{4} = \frac{{28}}{4} \Rightarrow x = \frac{{28}}{4} \Rightarrow x = 7\]

  9. Spring98
    • one year ago
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    So that shows me that step 2 is incorrect right?

  10. Michele_Laino
    • one year ago
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    right!

  11. Spring98
    • one year ago
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    so it is she did not divide 28 by 4 right?

  12. Michele_Laino
    • one year ago
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    that's right!

  13. Spring98
    • one year ago
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    thanks for helping @Michele_Laino

  14. Michele_Laino
    • one year ago
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    :)

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