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Spring98

  • one year ago

A system of equations is shown below: Equation A: 4c = d – 8 Equation B: c = 5d + 8 Which of the following steps should be performed to eliminate variable d first? Multiply equation B by 4. Multiply equation A by –5. Multiply equation A by 4. Multiply equation B by 5.

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  1. Spring98
    • one year ago
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    isn't it the second one?

  2. radar
    • one year ago
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    That would make the coefficients of d opposite and equal absolute value. That would allow you to eliminate d.

  3. Spring98
    • one year ago
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    as an answer?

  4. radar
    • one year ago
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    Can't provide answer, but that procedure would allow you to solve by eliminating d, and if you did it first, you eliminate d first.

  5. Spring98
    • one year ago
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    ok so d is the answer

  6. radar
    • one year ago
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    That ain't what you said.

  7. radar
    • one year ago
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    Here is what you said: "Isn't it the second one?"

  8. Spring98
    • one year ago
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    i know but your telling me d!

  9. radar
    • one year ago
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    No I am not telling you d!, I am telling you if you follow thru on your first post you can deliminate d the variable. I am not saying the choice d.

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