21x+9=14x-4

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Solution for 21x+9=14x-4 equation:


Simplifying
21x + 9 = 14x + -4

Reorder the terms:
9 + 21x = 14x + -4

Reorder the terms:
9 + 21x = -4 + 14x

Solving
9 + 21x = -4 + 14x

Solving for variable 'x'.

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

Add '-14x' to each side of the equation.
9 + 21x + -14x = -4 + 14x + -14x

Combine like terms: 21x + -14x = 7x
9 + 7x = -4 + 14x + -14x

Combine like terms: 14x + -14x = 0
9 + 7x = -4 + 0
9 + 7x = -4

Add '-9' to each side of the equation.
9 + -9 + 7x = -4 + -9

Combine like terms: 9 + -9 = 0
0 + 7x = -4 + -9
7x = -4 + -9

Combine like terms: -4 + -9 = -13
7x = -13

Divide each side by '7'.
x = -1.857142857

Simplifying
x = -1.857142857

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