5x+2(300-x)=1200

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Solution for 5x+2(300-x)=1200 equation:


Simplifying
5x + 2(300 + -1x) = 1200
5x + (300 * 2 + -1x * 2) = 1200
5x + (600 + -2x) = 1200

Reorder the terms:
600 + 5x + -2x = 1200

Combine like terms: 5x + -2x = 3x
600 + 3x = 1200

Solving
600 + 3x = 1200

Solving for variable 'x'.

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

Add '-600' to each side of the equation.
600 + -600 + 3x = 1200 + -600

Combine like terms: 600 + -600 = 0
0 + 3x = 1200 + -600
3x = 1200 + -600

Combine like terms: 1200 + -600 = 600
3x = 600

Divide each side by '3'.
x = 200

Simplifying
x = 200

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