4notebook+7pen =115 4notebook+2pen=90 what is the cost for 1notebookad1pen ​

Question

4notebook+7pen =115
4notebook+2pen=90
what is the cost for 1notebookad1pen

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Amaya 4 weeks 2021-08-17T15:14:03+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-08-17T15:15:09+00:00

    Answer:

    NOTEBOOK= N

    PEN= P

    7 P= 115-4N

    P=115-4N/7……….1

    4N=90-2P

    N=90-2P/4

    PUT IN EQUATION 1

    P=115-4*90-2P/4/7

    Step-by-step explanation:

    I THINK IT WILL HELP YOU

    0
    2021-08-17T15:15:42+00:00

    Answer:

    20 notebook 5 pen maybe

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