4=a(2+1)(2-4)

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Solution for 4=a(2+1)(2-4) equation:


Simplifying
4 = a(2 + 1)(2 + -4)

Combine like terms: 2 + 1 = 3
4 = a(3)(2 + -4)

Combine like terms: 2 + -4 = -2
4 = a * 3(-2)

Reorder the terms for easier multiplication:
4 = 3 * -2a

Multiply 3 * -2
4 = -6a

Solving
4 = -6a

Solving for variable 'a'.

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

Add '6a' to each side of the equation.
4 + 6a = -6a + 6a

Combine like terms: -6a + 6a = 0
4 + 6a = 0

Add '-4' to each side of the equation.
4 + -4 + 6a = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 6a = 0 + -4
6a = 0 + -4

Combine like terms: 0 + -4 = -4
6a = -4

Divide each side by '6'.
a = -0.6666666667

Simplifying
a = -0.6666666667

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