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cindy

  • 5 years ago

simplify -3 (7w) + 7 (3w) v v -21w + 21w 42w is that correct

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  1. angela210793
    • 5 years ago
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    =0

  2. anonymous
    • 5 years ago
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    No. The answer is 0 (zero). - x + x = 0 (where x is any number) Because - x + x is same as +x - x which is same as x - x which is ZERO.

  3. angela210793
    • 5 years ago
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    rahulg has explained it

  4. Cindy
    • 5 years ago
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    can youshow m th steps

  5. angela210793
    • 5 years ago
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    u got -21w and 21w....so if u sum two opposite numbers u get 0

  6. Cindy
    • 5 years ago
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    sits like this -3 (7w) + 7 (3w) v v -21w + 21w =0

  7. angela210793
    • 5 years ago
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    yes that's it :)

  8. angela210793
    • 5 years ago
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    whenever u have two opposite no.s their sum is 0

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