x-(4x-7)=5x+(x+21)

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Solution for x-(4x-7)=5x+(x+21) equation:


Simplifying
x + -1(4x + -7) = 5x + (x + 21)

Reorder the terms:
x + -1(-7 + 4x) = 5x + (x + 21)
x + (-7 * -1 + 4x * -1) = 5x + (x + 21)
x + (7 + -4x) = 5x + (x + 21)

Reorder the terms:
7 + x + -4x = 5x + (x + 21)

Combine like terms: x + -4x = -3x
7 + -3x = 5x + (x + 21)

Reorder the terms:
7 + -3x = 5x + (21 + x)

Remove parenthesis around (21 + x)
7 + -3x = 5x + 21 + x

Reorder the terms:
7 + -3x = 21 + 5x + x

Combine like terms: 5x + x = 6x
7 + -3x = 21 + 6x

Solving
7 + -3x = 21 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
7 + -3x + -6x = 21 + 6x + -6x

Combine like terms: -3x + -6x = -9x
7 + -9x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
7 + -9x = 21 + 0
7 + -9x = 21

Add '-7' to each side of the equation.
7 + -7 + -9x = 21 + -7

Combine like terms: 7 + -7 = 0
0 + -9x = 21 + -7
-9x = 21 + -7

Combine like terms: 21 + -7 = 14
-9x = 14

Divide each side by '-9'.
x = -1.555555556

Simplifying
x = -1.555555556

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