21x=16x-7

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Solution for 21x=16x-7 equation: 


Simplifying
21x = 16x + -7

Reorder the terms:
21x = -7 + 16x

Solving
21x = -7 + 16x

Solving for variable 'x'.

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

Add '-16x' to each side of the equation.
21x + -16x = -7 + 16x + -16x

Combine like terms: 21x + -16x = 5x
5x = -7 + 16x + -16x

Combine like terms: 16x + -16x = 0
5x = -7 + 0
5x = -7

Divide each side by '5'.
x = -1.4

Simplifying
x = -1.4

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