.39+3.90=x

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Solution for .39+3.90=x equation:


Simplifying
0.39 + 3.90 = x

Combine like terms: 0.39 + 3.90 = 4.29
4.29 = x

Solving
4.29 = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
4.29 + -1x = x + -1x

Combine like terms: x + -1x = 0
4.29 + -1x = 0

Add '-4.29' to each side of the equation.
4.29 + -4.29 + -1x = 0 + -4.29

Combine like terms: 4.29 + -4.29 = 0.00
0.00 + -1x = 0 + -4.29
-1x = 0 + -4.29

Combine like terms: 0 + -4.29 = -4.29
-1x = -4.29

Divide each side by '-1'.
x = 4.29

Simplifying
x = 4.29

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