400+20x=500

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Solution for 400+20x=500 equation: 


Simplifying
400 + 20x = 500

Solving
400 + 20x = 500

Solving for variable 'x'.

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

Add '-400' to each side of the equation.
400 + -400 + 20x = 500 + -400

Combine like terms: 400 + -400 = 0
0 + 20x = 500 + -400
20x = 500 + -400

Combine like terms: 500 + -400 = 100
20x = 100

Divide each side by '20'.
x = 5

Simplifying
x = 5

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