6x=3.5x+21

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Solution for 6x=3.5x+21 equation: 


Simplifying
6x = 3.5x + 21

Reorder the terms:
6x = 21 + 3.5x

Solving
6x = 21 + 3.5x

Solving for variable 'x'.

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

Add '-3.5x' to each side of the equation.
6x + -3.5x = 21 + 3.5x + -3.5x

Combine like terms: 6x + -3.5x = 2.5x
2.5x = 21 + 3.5x + -3.5x

Combine like terms: 3.5x + -3.5x = 0.0
2.5x = 21 + 0.0
2.5x = 21

Divide each side by '2.5'.
x = 8.4

Simplifying
x = 8.4

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