1x-21=4x+8

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Solution for 1x-21=4x+8 equation:


Simplifying
1x + -21 = 4x + 8

Reorder the terms:
-21 + 1x = 4x + 8

Reorder the terms:
-21 + 1x = 8 + 4x

Solving
-21 + 1x = 8 + 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.
-21 + 1x + -4x = 8 + 4x + -4x

Combine like terms: 1x + -4x = -3x
-21 + -3x = 8 + 4x + -4x

Combine like terms: 4x + -4x = 0
-21 + -3x = 8 + 0
-21 + -3x = 8

Add '21' to each side of the equation.
-21 + 21 + -3x = 8 + 21

Combine like terms: -21 + 21 = 0
0 + -3x = 8 + 21
-3x = 8 + 21

Combine like terms: 8 + 21 = 29
-3x = 29

Divide each side by '-3'.
x = -9.666666667

Simplifying
x = -9.666666667

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