6.6=2.1X-1.8

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Solution for 6.6=2.1X-1.8 equation: 


Simplifying
6.6 = 2.1X + -1.8

Reorder the terms:
6.6 = -1.8 + 2.1X

Solving
6.6 = -1.8 + 2.1X

Solving for variable 'X'.

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

Add '-2.1X' to each side of the equation.
6.6 + -2.1X = -1.8 + 2.1X + -2.1X

Combine like terms: 2.1X + -2.1X = 0.0
6.6 + -2.1X = -1.8 + 0.0
6.6 + -2.1X = -1.8

Add '-6.6' to each side of the equation.
6.6 + -6.6 + -2.1X = -1.8 + -6.6

Combine like terms: 6.6 + -6.6 = 0.0
0.0 + -2.1X = -1.8 + -6.6
-2.1X = -1.8 + -6.6

Combine like terms: -1.8 + -6.6 = -8.4
-2.1X = -8.4

Divide each side by '-2.1'.
X = 4

Simplifying
X = 4

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