51-2x=8x+21

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Solution for 51-2x=8x+21 equation:


Simplifying
51 + -2x = 8x + 21

Reorder the terms:
51 + -2x = 21 + 8x

Solving
51 + -2x = 21 + 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.
51 + -2x + -8x = 21 + 8x + -8x

Combine like terms: -2x + -8x = -10x
51 + -10x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
51 + -10x = 21 + 0
51 + -10x = 21

Add '-51' to each side of the equation.
51 + -51 + -10x = 21 + -51

Combine like terms: 51 + -51 = 0
0 + -10x = 21 + -51
-10x = 21 + -51

Combine like terms: 21 + -51 = -30
-10x = -30

Divide each side by '-10'.
x = 3

Simplifying
x = 3

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