30=8+3(12+4x)

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Solution for 30=8+3(12+4x) equation:


Simplifying
30 = 8 + 3(12 + 4x)
30 = 8 + (12 * 3 + 4x * 3)
30 = 8 + (36 + 12x)

Combine like terms: 8 + 36 = 44
30 = 44 + 12x

Solving
30 = 44 + 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.
30 + -12x = 44 + 12x + -12x

Combine like terms: 12x + -12x = 0
30 + -12x = 44 + 0
30 + -12x = 44

Add '-30' to each side of the equation.
30 + -30 + -12x = 44 + -30

Combine like terms: 30 + -30 = 0
0 + -12x = 44 + -30
-12x = 44 + -30

Combine like terms: 44 + -30 = 14
-12x = 14

Divide each side by '-12'.
x = -1.166666667

Simplifying
x = -1.166666667

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