x+6=4x-15

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Solution for x+6=4x-15 equation:


Simplifying
x + 6 = 4x + -15

Reorder the terms:
6 + x = 4x + -15

Reorder the terms:
6 + x = -15 + 4x

Solving
6 + x = -15 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
6 + x + -4x = -15 + 4x + -4x

Combine like terms: x + -4x = -3x
6 + -3x = -15 + 4x + -4x

Combine like terms: 4x + -4x = 0
6 + -3x = -15 + 0
6 + -3x = -15

Add '-6' to each side of the equation.
6 + -6 + -3x = -15 + -6

Combine like terms: 6 + -6 = 0
0 + -3x = -15 + -6
-3x = -15 + -6

Combine like terms: -15 + -6 = -21
-3x = -21

Divide each side by '-3'.
x = 7

Simplifying
x = 7

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