1+x=400

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Solution for 1+x=400 equation: 


Simplifying
1 + x = 400

Solving
1 + x = 400

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + x = 400 + -1

Combine like terms: 1 + -1 = 0
0 + x = 400 + -1
x = 400 + -1

Combine like terms: 400 + -1 = 399
x = 399

Simplifying
x = 399

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