51-5x=4x+21

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Solution for 51-5x=4x+21 equation:


Simplifying
51 + -5x = 4x + 21

Reorder the terms:
51 + -5x = 21 + 4x

Solving
51 + -5x = 21 + 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.
51 + -5x + -4x = 21 + 4x + -4x

Combine like terms: -5x + -4x = -9x
51 + -9x = 21 + 4x + -4x

Combine like terms: 4x + -4x = 0
51 + -9x = 21 + 0
51 + -9x = 21

Add '-51' to each side of the equation.
51 + -51 + -9x = 21 + -51

Combine like terms: 51 + -51 = 0
0 + -9x = 21 + -51
-9x = 21 + -51

Combine like terms: 21 + -51 = -30
-9x = -30

Divide each side by '-9'.
x = 3.333333333

Simplifying
x = 3.333333333

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