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17 May, 17:39

5x-4y+-13 and 3x-4y+-11

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Answers (2)
  1. 17 May, 18:34
    0
    1) 5x-4y-13=3x-4y-11

    2) 5x-4y=3x-4y-11+13 (Add 13 to both sides)

    3) 5x-4y+4y=3x-11+13 (Add 4y to both sides)

    4) 5x-3x=-11+13 (Subtract 3x from both sides (the - 4y and + 4y cancel each other))

    5) 2x=2 (subtract 5x-3x and add - 11+13)

    6) x=1 (Divide both sides by 2)

    x=1 y=0 or (1,0)
  2. 17 May, 19:12
    0
    5x + - 4y = 13

    Solving

    -5x + - 4y = 13

    Solving for variable 'x'.

    Move all terms containing x to the left, all other terms to the right.

    Add '4y' to each side of the equation.

    -5x + - 4y + 4y = 13 + 4y

    Combine like terms: - 4y + 4y = 0

    -5x + 0 = 13 + 4y

    -5x = 13 + 4y

    Divide each side by '-5'.

    x = - 2.6 + - 0.8y

    Simplifying

    x = - 2.6 + - 0.8y

    Simplifying

    3x + - 4y + - 11 = 0

    Reorder the terms:

    -11 + 3x + - 4y = 0

    Solving

    -11 + 3x + - 4y = 0

    Solving for variable 'x'.

    Move all terms containing x to the left, all other terms to the right.

    Add '11' to each side of the equation.

    -11 + 3x + 11 + - 4y = 0 + 11

    Reorder the terms:

    -11 + 11 + 3x + - 4y = 0 + 11

    Combine like terms: - 11 + 11 = 0

    0 + 3x + - 4y = 0 + 11

    3x + - 4y = 0 + 11Combine like terms: 0 + 11 = 11

    3x + - 4y = 11

    Add '4y' to each side of the equation.

    3x + - 4y + 4y = 11 + 4y

    Combine like terms: - 4y + 4y = 0

    3x + 0 = 11 + 4y

    3x = 11 + 4y

    Divide each side by '3'.

    x = 3.666666667 + 1.333333333y

    Simplifying

    x = 3.666666667 + 1.333333333y
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