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19 December, 09:32

Find the solution of the system of equations.

5x - 2y = - 5

5x + 6y = 35

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Answers (1)
  1. 19 December, 10:39
    0
    (1,5)

    Step-by-step explanation:

    Find a way to cancel out a variable, right now the easiest option is x because you only need to make one of the two negative like such:

    - (5x-2y=-5)

    5x+6y=35

    ^this becomes

    -5x+2y = 5

    5x + 6y=35

    When you add up the terms, the x cancels out and you're left with

    8y = 40

    Now you need to solve for y by getting the variable by itself (divide by 8)

    y = 5

    Now, in order to find x, you need to plug y into one of the original equations

    I'm going to choose 5x-2y=-5 simply because it has smaller numbers

    So once you plug y in the equation should look like this:

    5x-2 (5) = -5

    Multiply - 2*5 and your equation should now be

    5x-10=-5

    Now you need to isolate the variable, first add 10 to both sides

    5x-10+10 = - 5+10

    5x=5

    Divide by 5 to officially solve for x

    x=1

    The answer should, therefore be (1,5)
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