3x+7x=300-5x

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Solution for 3x+7x=300-5x equation: 


Simplifying
3x + 7x = 300 + -5x

Combine like terms: 3x + 7x = 10x
10x = 300 + -5x

Solving
10x = 300 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
10x + 5x = 300 + -5x + 5x

Combine like terms: 10x + 5x = 15x
15x = 300 + -5x + 5x

Combine like terms: -5x + 5x = 0
15x = 300 + 0
15x = 300

Divide each side by '15'.
x = 20

Simplifying
x = 20

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