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

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


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

Reorder the terms:
3(7 + x) = 9(x + -5)
(7 * 3 + x * 3) = 9(x + -5)
(21 + 3x) = 9(x + -5)

Reorder the terms:
21 + 3x = 9(-5 + x)
21 + 3x = (-5 * 9 + x * 9)
21 + 3x = (-45 + 9x)

Solving
21 + 3x = -45 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
21 + 3x + -9x = -45 + 9x + -9x

Combine like terms: 3x + -9x = -6x
21 + -6x = -45 + 9x + -9x

Combine like terms: 9x + -9x = 0
21 + -6x = -45 + 0
21 + -6x = -45

Add '-21' to each side of the equation.
21 + -21 + -6x = -45 + -21

Combine like terms: 21 + -21 = 0
0 + -6x = -45 + -21
-6x = -45 + -21

Combine like terms: -45 + -21 = -66
-6x = -66

Divide each side by '-6'.
x = 11

Simplifying
x = 11

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