20=(8x+4)+(9x+12)

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Solution for 20=(8x+4)+(9x+12) equation:


Simplifying
20 = (8x + 4) + (9x + 12)

Reorder the terms:
20 = (4 + 8x) + (9x + 12)

Remove parenthesis around (4 + 8x)
20 = 4 + 8x + (9x + 12)

Reorder the terms:
20 = 4 + 8x + (12 + 9x)

Remove parenthesis around (12 + 9x)
20 = 4 + 8x + 12 + 9x

Reorder the terms:
20 = 4 + 12 + 8x + 9x

Combine like terms: 4 + 12 = 16
20 = 16 + 8x + 9x

Combine like terms: 8x + 9x = 17x
20 = 16 + 17x

Solving
20 = 16 + 17x

Solving for variable 'x'.

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

Add '-17x' to each side of the equation.
20 + -17x = 16 + 17x + -17x

Combine like terms: 17x + -17x = 0
20 + -17x = 16 + 0
20 + -17x = 16

Add '-20' to each side of the equation.
20 + -20 + -17x = 16 + -20

Combine like terms: 20 + -20 = 0
0 + -17x = 16 + -20
-17x = 16 + -20

Combine like terms: 16 + -20 = -4
-17x = -4

Divide each side by '-17'.
x = 0.2352941176

Simplifying
x = 0.2352941176

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