3(x+9)=2(4x+21)

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Solution for 3(x+9)=2(4x+21) equation:


Simplifying
3(x + 9) = 2(4x + 21)

Reorder the terms:
3(9 + x) = 2(4x + 21)
(9 * 3 + x * 3) = 2(4x + 21)
(27 + 3x) = 2(4x + 21)

Reorder the terms:
27 + 3x = 2(21 + 4x)
27 + 3x = (21 * 2 + 4x * 2)
27 + 3x = (42 + 8x)

Solving
27 + 3x = 42 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
27 + 3x + -8x = 42 + 8x + -8x

Combine like terms: 3x + -8x = -5x
27 + -5x = 42 + 8x + -8x

Combine like terms: 8x + -8x = 0
27 + -5x = 42 + 0
27 + -5x = 42

Add '-27' to each side of the equation.
27 + -27 + -5x = 42 + -27

Combine like terms: 27 + -27 = 0
0 + -5x = 42 + -27
-5x = 42 + -27

Combine like terms: 42 + -27 = 15
-5x = 15

Divide each side by '-5'.
x = -3

Simplifying
x = -3

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