use the method of elimination to solve the following pairs of simultaneous equations 4p+3q=9 2p+3q=3​

Question

use the method of elimination to solve the following pairs of simultaneous equations 4p+3q=9
2p+3q=3​

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Ngọc Hoa 2 months 2021-07-19T02:34:46+00:00 1 Answers 3 views 0

Answers ( )

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    2021-07-19T02:36:08+00:00

    Answer:

    P=3, q=-1

    Step-by-step explanation:

    4p+3q=9 equation 1

    2p+3q=3 equation 2

    -4p-3q=-9 multiply equation 1 by -1 to eliminate q

    -2p+0=-6 add above 2 equations

    -2p=-6

    p=3

    solve for q by inserting p value into either equation

    2p+3q=3

    2(3)+3q=3

    6+3q=3

    3q=-3

    q=-1

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )