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anonymous

  • 5 years ago

solve using the multiplication principle 8x=40

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  1. anonymous
    • 5 years ago
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    do 40 divided by 8

  2. anonymous
    • 5 years ago
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    since the x is multiplied by a number, you do the operation (+, _, *, /) that "undoes" multiplication, which is division, so that x ends up alone on that side of the = sign.

  3. anonymous
    • 5 years ago
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    the multiplicative identity is 1. if you have a number x, you multiply it by its reciprocal to get 1. so if you multiply 8 by 1/8, you will get 1. since you are multiplying by 1/8 on one side of the equation, you must do it on the other side of the equation as well so you have 8x times 1/8 = 40 times 1/8

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