400+4x-9=y

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Solution for 400+4x-9=y equation: 


Simplifying
400 + 4x + -9 = y

Reorder the terms:
400 + -9 + 4x = y

Combine like terms: 400 + -9 = 391
391 + 4x = y

Solving
391 + 4x = y

Solving for variable 'x'.

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

Add '-391' to each side of the equation.
391 + -391 + 4x = -391 + y

Combine like terms: 391 + -391 = 0
0 + 4x = -391 + y
4x = -391 + y

Divide each side by '4'.
x = -97.75 + 0.25y

Simplifying
x = -97.75 + 0.25y

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