x-1.29=3.9

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Solution for x-1.29=3.9 equation: 


Simplifying
x + -1.29 = 3.9

Reorder the terms:
-1.29 + x = 3.9

Solving
-1.29 + x = 3.9

Solving for variable 'x'.

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

Add '1.29' to each side of the equation.
-1.29 + 1.29 + x = 3.9 + 1.29

Combine like terms: -1.29 + 1.29 = 0.00
0.00 + x = 3.9 + 1.29
x = 3.9 + 1.29

Combine like terms: 3.9 + 1.29 = 5.19
x = 5.19

Simplifying
x = 5.19

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