x-.40=30

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Solution for x-.40=30 equation: 


Simplifying
x + -0.40 = 30

Reorder the terms:
-0.40 + x = 30

Solving
-0.40 + x = 30

Solving for variable 'x'.

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

Add '0.40' to each side of the equation.
-0.40 + 0.40 + x = 30 + 0.40

Combine like terms: -0.40 + 0.40 = 0.00
0.00 + x = 30 + 0.40
x = 30 + 0.40

Combine like terms: 30 + 0.40 = 30.4
x = 30.4

Simplifying
x = 30.4

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