100+(20x)=400

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Solution for 100+(20x)=400 equation: 


Simplifying
100 + (20x) = 400

Solving
100 + (20x) = 400

Solving for variable 'x'.

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

Add '-100' to each side of the equation.
100 + -100 + (20x) = 400 + -100

Combine like terms: 100 + -100 = 0
0 + (20x) = 400 + -100
(20x) = 400 + -100

Combine like terms: 400 + -100 = 300
(20x) = 300

Divide each side by '20'.
x = 15

Simplifying
x = 15

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