20=8+4(12+4X)

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


Simplifying
20 = 8 + 4(12 + 4X)
20 = 8 + (12 * 4 + 4X * 4)
20 = 8 + (48 + 16X)

Combine like terms: 8 + 48 = 56
20 = 56 + 16X

Solving
20 = 56 + 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.
20 + -16X = 56 + 16X + -16X

Combine like terms: 16X + -16X = 0
20 + -16X = 56 + 0
20 + -16X = 56

Add '-20' to each side of the equation.
20 + -20 + -16X = 56 + -20

Combine like terms: 20 + -20 = 0
0 + -16X = 56 + -20
-16X = 56 + -20

Combine like terms: 56 + -20 = 36
-16X = 36

Divide each side by '-16'.
X = -2.25

Simplifying
X = -2.25

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