(X+2.2)-(0.4x+3)=9

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Solution for (X+2.2)-(0.4x+3)=9 equation: 


Simplifying
(X + 2.2) + -1(0.4x + 3) = 9

Reorder the terms:
(2.2 + X) + -1(0.4x + 3) = 9

Remove parenthesis around (2.2 + X)
2.2 + X + -1(0.4x + 3) = 9

Reorder the terms:
2.2 + X + -1(3 + 0.4x) = 9
2.2 + X + (3 * -1 + 0.4x * -1) = 9
2.2 + X + (-3 + -0.4x) = 9

Reorder the terms:
2.2 + -3 + X + -0.4x = 9

Combine like terms: 2.2 + -3 = -0.8
-0.8 + X + -0.4x = 9

Solving
-0.8 + X + -0.4x = 9

Solving for variable 'X'.

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

Add '0.8' to each side of the equation.
-0.8 + X + 0.8 + -0.4x = 9 + 0.8

Reorder the terms:
-0.8 + 0.8 + X + -0.4x = 9 + 0.8

Combine like terms: -0.8 + 0.8 = 0.0
0.0 + X + -0.4x = 9 + 0.8
X + -0.4x = 9 + 0.8

Combine like terms: 9 + 0.8 = 9.8
X + -0.4x = 9.8

Add '0.4x' to each side of the equation.
X + -0.4x + 0.4x = 9.8 + 0.4x

Combine like terms: -0.4x + 0.4x = 0.0
X + 0.0 = 9.8 + 0.4x
X = 9.8 + 0.4x

Simplifying
X = 9.8 + 0.4x

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