x+2x+2x-30=75

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Solution for x+2x+2x-30=75 equation:


Simplifying
x + 2x + 2x + -30 = 75

Reorder the terms:
-30 + x + 2x + 2x = 75

Combine like terms: x + 2x = 3x
-30 + 3x + 2x = 75

Combine like terms: 3x + 2x = 5x
-30 + 5x = 75

Solving
-30 + 5x = 75

Solving for variable 'x'.

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

Add '30' to each side of the equation.
-30 + 30 + 5x = 75 + 30

Combine like terms: -30 + 30 = 0
0 + 5x = 75 + 30
5x = 75 + 30

Combine like terms: 75 + 30 = 105
5x = 105

Divide each side by '5'.
x = 21

Simplifying
x = 21

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