What is the value of y in the solution to the following system of equations? 2x + y = -4 5x + 3y = -6

Question

What is the value of y in the solution to the following system of equations?
2x + y = -4
5x + 3y = -6

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Thu Thủy 5 years 2021-07-18T21:28:53+00:00 1 Answers 23 views 0

Answers ( )

  1. kimchi2
    0
    2021-07-18T21:30:46+00:00
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    y= -32

    Step-by-step explanation:

    step 1: from the first equation you will make X the subject of formula, the equation then becomes;

    X= 4-y

    2

    step 2: substitute X in the second equation, the equation then becomes 5 * [4-y] + 3y = -6

    [ 2]

    step 3: find the LCM and then cross multiply; 20-5y+6y = -6

    2

    20+y = -12

    y= -12-20

    y= -32

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