.12(x+300)=4200

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Solution for .12(x+300)=4200 equation:


Simplifying
0.12(x + 300) = 4200

Reorder the terms:
0.12(300 + x) = 4200
(300 * 0.12 + x * 0.12) = 4200
(36 + 0.12x) = 4200

Solving
36 + 0.12x = 4200

Solving for variable 'x'.

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

Add '-36' to each side of the equation.
36 + -36 + 0.12x = 4200 + -36

Combine like terms: 36 + -36 = 0
0 + 0.12x = 4200 + -36
0.12x = 4200 + -36

Combine like terms: 4200 + -36 = 4164
0.12x = 4164

Divide each side by '0.12'.
x = 34700

Simplifying
x = 34700

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