3+1x=400

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Solution for 3+1x=400 equation: 


Simplifying
3 + 1x = 400

Solving
3 + 1x = 400

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 1x = 400 + -3

Combine like terms: 3 + -3 = 0
0 + 1x = 400 + -3
1x = 400 + -3

Combine like terms: 400 + -3 = 397
1x = 397

Divide each side by '1'.
x = 397

Simplifying
x = 397

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