378+20=x

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Solution for 378+20=x equation:


Simplifying
378 + 20 = x

Combine like terms: 378 + 20 = 398
398 = x

Solving
398 = 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.
398 + -1x = x + -1x

Combine like terms: x + -1x = 0
398 + -1x = 0

Add '-398' to each side of the equation.
398 + -398 + -1x = 0 + -398

Combine like terms: 398 + -398 = 0
0 + -1x = 0 + -398
-1x = 0 + -398

Combine like terms: 0 + -398 = -398
-1x = -398

Divide each side by '-1'.
x = 398

Simplifying
x = 398

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