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21 January, 16:03

How do you do 20x+15=25x+19

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Answers (2)
  1. 21 January, 16:31
    0
    -0.8

    Step-by-step explanation:

    20x+15=25x+19

    -25x - 25x

    -5x+15=19

    -15 - 15

    -5x=4

    4/-5

    x=-0.8
  2. 21 January, 16:45
    0
    x = - 4/5 or - 0.8 (decimal form).

    Step-by-step explanation:

    20x+15=25x+19

    Simplifying

    20x + 15 = 25x + 19

    Reorder the terms:

    15 + 20x = 25x + 19

    Reorder the terms:

    15 + 20x = 19 + 25x

    Solving

    15 + 20x = 19 + 25x

    Solving for variable 'x'.

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

    Add '-25x' to each side of the equation.

    15 + 20x + - 25x = 19 + 25x + - 25x

    Combine like terms: 20x + - 25x = - 5x

    15 + - 5x = 19 + 25x + - 25x

    Combine like terms: 25x + - 25x = 0

    15 + - 5x = 19 + 0

    15 + - 5x = 19

    Add '-15' to each side of the equation.

    15 + - 15 + - 5x = 19 + - 15

    Combine like terms: 15 + - 15 = 0

    0 + - 5x = 19 + - 15

    -5x = 19 + - 15

    Combine like terms: 19 + - 15 = 4

    -5x = 4

    Divide each side by '-5'.

    x = - 0.8

    Simplifying

    x = - 0.8
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