300=2x+x+70+80

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Solution for 300=2x+x+70+80 equation: 


Simplifying
300 = 2x + x + 70 + 80

Reorder the terms:
300 = 70 + 80 + 2x + x

Combine like terms: 70 + 80 = 150
300 = 150 + 2x + x

Combine like terms: 2x + x = 3x
300 = 150 + 3x

Solving
300 = 150 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
300 + -3x = 150 + 3x + -3x

Combine like terms: 3x + -3x = 0
300 + -3x = 150 + 0
300 + -3x = 150

Add '-300' to each side of the equation.
300 + -300 + -3x = 150 + -300

Combine like terms: 300 + -300 = 0
0 + -3x = 150 + -300
-3x = 150 + -300

Combine like terms: 150 + -300 = -150
-3x = -150

Divide each side by '-3'.
x = 50

Simplifying
x = 50

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