4(2x+5)=12x-9

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Solution for 4(2x+5)=12x-9 equation:


Simplifying
4(2x + 5) = 12x + -9

Reorder the terms:
4(5 + 2x) = 12x + -9
(5 * 4 + 2x * 4) = 12x + -9
(20 + 8x) = 12x + -9

Reorder the terms:
20 + 8x = -9 + 12x

Solving
20 + 8x = -9 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
20 + 8x + -12x = -9 + 12x + -12x

Combine like terms: 8x + -12x = -4x
20 + -4x = -9 + 12x + -12x

Combine like terms: 12x + -12x = 0
20 + -4x = -9 + 0
20 + -4x = -9

Add '-20' to each side of the equation.
20 + -20 + -4x = -9 + -20

Combine like terms: 20 + -20 = 0
0 + -4x = -9 + -20
-4x = -9 + -20

Combine like terms: -9 + -20 = -29
-4x = -29

Divide each side by '-4'.
x = 7.25

Simplifying
x = 7.25

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