5x+21=3+8x-6

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Solution for 5x+21=3+8x-6 equation:


Simplifying
5x + 21 = 3 + 8x + -6

Reorder the terms:
21 + 5x = 3 + 8x + -6

Reorder the terms:
21 + 5x = 3 + -6 + 8x

Combine like terms: 3 + -6 = -3
21 + 5x = -3 + 8x

Solving
21 + 5x = -3 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
21 + 5x + -8x = -3 + 8x + -8x

Combine like terms: 5x + -8x = -3x
21 + -3x = -3 + 8x + -8x

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

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

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

Combine like terms: -3 + -21 = -24
-3x = -24

Divide each side by '-3'.
x = 8

Simplifying
x = 8

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