6x-9=3(x+7)

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Solution for 6x-9=3(x+7) equation:


Simplifying
6x + -9 = 3(x + 7)

Reorder the terms:
-9 + 6x = 3(x + 7)

Reorder the terms:
-9 + 6x = 3(7 + x)
-9 + 6x = (7 * 3 + x * 3)
-9 + 6x = (21 + 3x)

Solving
-9 + 6x = 21 + 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.
-9 + 6x + -3x = 21 + 3x + -3x

Combine like terms: 6x + -3x = 3x
-9 + 3x = 21 + 3x + -3x

Combine like terms: 3x + -3x = 0
-9 + 3x = 21 + 0
-9 + 3x = 21

Add '9' to each side of the equation.
-9 + 9 + 3x = 21 + 9

Combine like terms: -9 + 9 = 0
0 + 3x = 21 + 9
3x = 21 + 9

Combine like terms: 21 + 9 = 30
3x = 30

Divide each side by '3'.
x = 10

Simplifying
x = 10

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