3x+2(3x)=x+40

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Solution for 3x+2(3x)=x+40 equation:


Simplifying
3x + 2(3x) = x + 40

Remove parenthesis around (3x)
3x + 2 * 3x = x + 40

Multiply 2 * 3
3x + 6x = x + 40

Combine like terms: 3x + 6x = 9x
9x = x + 40

Reorder the terms:
9x = 40 + x

Solving
9x = 40 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
9x + -1x = 40 + x + -1x

Combine like terms: 9x + -1x = 8x
8x = 40 + x + -1x

Combine like terms: x + -1x = 0
8x = 40 + 0
8x = 40

Divide each side by '8'.
x = 5

Simplifying
x = 5

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