0.4X-2.5=1.3X+4.2

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Solution for 0.4X-2.5=1.3X+4.2 equation: 


Simplifying
0.4X + -2.5 = 1.3X + 4.2

Reorder the terms:
-2.5 + 0.4X = 1.3X + 4.2

Reorder the terms:
-2.5 + 0.4X = 4.2 + 1.3X

Solving
-2.5 + 0.4X = 4.2 + 1.3X

Solving for variable 'X'.

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

Add '-1.3X' to each side of the equation.
-2.5 + 0.4X + -1.3X = 4.2 + 1.3X + -1.3X

Combine like terms: 0.4X + -1.3X = -0.9X
-2.5 + -0.9X = 4.2 + 1.3X + -1.3X

Combine like terms: 1.3X + -1.3X = 0.0
-2.5 + -0.9X = 4.2 + 0.0
-2.5 + -0.9X = 4.2

Add '2.5' to each side of the equation.
-2.5 + 2.5 + -0.9X = 4.2 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + -0.9X = 4.2 + 2.5
-0.9X = 4.2 + 2.5

Combine like terms: 4.2 + 2.5 = 6.7
-0.9X = 6.7

Divide each side by '-0.9'.
X = -7.444444444

Simplifying
X = -7.444444444

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