6.4x-2.1x=77.4

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Solution for 6.4x-2.1x=77.4 equation: 


Simplifying
6.4x + -2.1x = 77.4

Combine like terms: 6.4x + -2.1x = 4.3x
4.3x = 77.4

Solving
4.3x = 77.4

Solving for variable 'x'.

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

Divide each side by '4.3'.
x = 18

Simplifying
x = 18

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