Which is the best first step and explanation for solving this system of equations? 3x+y=7 x+y=3

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Which is the best first step and explanation for solving this system of equations? 3x+y=7 x+y=3

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Ladonna 4 years 2021-07-28T21:46:07+00:00 1 Answers 30 views 0

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  1. Philomena
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    2021-07-28T21:47:36+00:00
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    Answer:

    x = 2 and y = 1

    Step-by-step explanation:

    Given equations are :

    3x+y=7 ….(1)

    x+y=3 ….(2)

    Subtract equation (1) and (2) we get :

    3x+y-(x+y) = 7-3

    3x+y-x-y = 4

    3x-x = 4

    2x = 4

    x = 2

    Now put the value of x in equation (2)

    2+y=3

    y=3-2

    y = 1

    Hence, the solution of the equations are x = 2 and y = 1.

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