3(x+5x)=7x-9

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Solution for 3(x+5x)=7x-9 equation:


Simplifying
3(x + 5x) = 7x + -9

Combine like terms: x + 5x = 6x
3(6x) = 7x + -9

Remove parenthesis around (6x)
3 * 6x = 7x + -9

Multiply 3 * 6
18x = 7x + -9

Reorder the terms:
18x = -9 + 7x

Solving
18x = -9 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
18x + -7x = -9 + 7x + -7x

Combine like terms: 18x + -7x = 11x
11x = -9 + 7x + -7x

Combine like terms: 7x + -7x = 0
11x = -9 + 0
11x = -9

Divide each side by '11'.
x = -0.8181818182

Simplifying
x = -0.8181818182

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