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23 April, 02:12

Solve for 3x+7=x-15

With explanation.

Check work as well

+5
Answers (1)
  1. 23 April, 02:19
    0
    Simplifying

    3x + - 7 = - 1x + 15

    Reorder the terms:

    -7 + 3x = - 1x + 15

    Reorder the terms:

    -7 + 3x = 15 + - 1x

    Solving

    -7 + 3x = 15 + - 1x

    Solving for variable 'x'.

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

    Add 'x' to each side of the equation.

    -7 + 3x + x = 15 + - 1x + x

    Combine like terms: 3x + x = 4x

    -7 + 4x = 15 + - 1x + x

    Combine like terms: - 1x + x = 0

    -7 + 4x = 15 + 0

    -7 + 4x = 15

    Add '7' to each side of the equation.

    -7 + 7 + 4x = 15 + 7

    Combine like terms: - 7 + 7 = 0

    0 + 4x = 15 + 7

    4x = 15 + 7

    Combine like terms: 15 + 7 = 22

    4x = 22

    Divide each side by '4'.

    x = 5.5

    Simplifying

    x = 5.5
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