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Yolo4mecuite

  • 3 years ago

Explain how you can show that -3 is a solution of x + 7 = 4.

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  1. Isaacclarke2
    • 3 years ago
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    Isolate the variable. x+7=4 -7 -7 x = -3

  2. Isaacclarke2
    • 3 years ago
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    That's it really. Just do everything to both sides.

  3. phi
    • 3 years ago
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    one way is replace x with -3 in x+7=4 replace the x with -3: -3 + 7 = 4 now do the arithmetic: -3+7 is 4, so you get 4=4 this is true, so x=-3 is a solution.

  4. Yolo4mecuite
    • 3 years ago
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    Thanks! :)

  5. Isaacclarke2
    • 3 years ago
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    NP

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