400=313+x

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Solution for 400=313+x equation:


Simplifying
400 = 313 + x

Solving
400 = 313 + 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.
400 + -1x = 313 + x + -1x

Combine like terms: x + -1x = 0
400 + -1x = 313 + 0
400 + -1x = 313

Add '-400' to each side of the equation.
400 + -400 + -1x = 313 + -400

Combine like terms: 400 + -400 = 0
0 + -1x = 313 + -400
-1x = 313 + -400

Combine like terms: 313 + -400 = -87
-1x = -87

Divide each side by '-1'.
x = 87

Simplifying
x = 87

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