9x-2x+28=21x

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Solution for 9x-2x+28=21x equation:


Simplifying
9x + -2x + 28 = 21x

Reorder the terms:
28 + 9x + -2x = 21x

Combine like terms: 9x + -2x = 7x
28 + 7x = 21x

Solving
28 + 7x = 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
28 + 7x + -21x = 21x + -21x

Combine like terms: 7x + -21x = -14x
28 + -14x = 21x + -21x

Combine like terms: 21x + -21x = 0
28 + -14x = 0

Add '-28' to each side of the equation.
28 + -28 + -14x = 0 + -28

Combine like terms: 28 + -28 = 0
0 + -14x = 0 + -28
-14x = 0 + -28

Combine like terms: 0 + -28 = -28
-14x = -28

Divide each side by '-14'.
x = 2

Simplifying
x = 2

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