4(3x+9)=8(2x+1)

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Solution for 4(3x+9)=8(2x+1) equation:


Simplifying
4(3x + 9) = 8(2x + 1)

Reorder the terms:
4(9 + 3x) = 8(2x + 1)
(9 * 4 + 3x * 4) = 8(2x + 1)
(36 + 12x) = 8(2x + 1)

Reorder the terms:
36 + 12x = 8(1 + 2x)
36 + 12x = (1 * 8 + 2x * 8)
36 + 12x = (8 + 16x)

Solving
36 + 12x = 8 + 16x

Solving for variable 'x'.

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

Add '-16x' to each side of the equation.
36 + 12x + -16x = 8 + 16x + -16x

Combine like terms: 12x + -16x = -4x
36 + -4x = 8 + 16x + -16x

Combine like terms: 16x + -16x = 0
36 + -4x = 8 + 0
36 + -4x = 8

Add '-36' to each side of the equation.
36 + -36 + -4x = 8 + -36

Combine like terms: 36 + -36 = 0
0 + -4x = 8 + -36
-4x = 8 + -36

Combine like terms: 8 + -36 = -28
-4x = -28

Divide each side by '-4'.
x = 7

Simplifying
x = 7

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