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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? A. Multiply equation B by 4 B. Multiply equation A by -5 C. Multiply equation A by 4 D. Multiply equation B by 5

  • : Equation A: 4c = d − 8
    Equation B: c = 5d + 8 

    Multiply Equation A by -5:
    Equation A: - 20c = -5d + 40

    Equation (1) + (2) :
    -19c = 48

    Answer: B. Multiply equation A by -5
Accounting Equation Accounting Corner
Accounting Equation Accounting Corner

Source: accountingcorner.org

System Of Equations Applications
System Of Equations Applications

Source: litrenaeg7dblearning.z14.web.core.windows.net

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