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13 June, 12:46

Use the linear combination method to solve the system of equations. - 2.1x + 4y = 5.3 2.1x - 5.5y = - 0.2 What is the solution to the system? (-1.1 ⇒ - 9, 3.4 ⇒ - 3.4)

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  1. 13 June, 13:00
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    x=-9, y=-3.4

    Step-by-step explanation:

    -2.1x+4y=5.3 ... (1)

    2.1x-5.5y=-0.2 ... (2)

    (1) + (2) we get:

    -1.5y=5.1

    y=-3.4.

    Put it in (1) equation we will have:

    -2.1x-13.6=5.3

    -2.1x=18.9

    x=-9.
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