-3x(1-(x+7+a)+1)=

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Solution for -3x(1-(x+7+a)+1)= equation:


Simplifying
-3x(1 + -1(x + 7 + a) + 1) = 0

Reorder the terms:
-3x(1 + -1(7 + a + x) + 1) = 0
-3x(1 + (7 * -1 + a * -1 + x * -1) + 1) = 0
-3x(1 + (-7 + -1a + -1x) + 1) = 0

Reorder the terms:
-3x(1 + -7 + 1 + -1a + -1x) = 0

Combine like terms: 1 + -7 = -6
-3x(-6 + 1 + -1a + -1x) = 0

Combine like terms: -6 + 1 = -5
-3x(-5 + -1a + -1x) = 0
(-5 * -3x + -1a * -3x + -1x * -3x) = 0

Reorder the terms:
(3ax + 15x + 3x2) = 0
(3ax + 15x + 3x2) = 0

Solving
3ax + 15x + 3x2 = 0

Solving for variable 'a'.

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

Add '-15x' to each side of the equation.
3ax + 15x + -15x + 3x2 = 0 + -15x

Combine like terms: 15x + -15x = 0
3ax + 0 + 3x2 = 0 + -15x
3ax + 3x2 = 0 + -15x
Remove the zero:
3ax + 3x2 = -15x

Add '-3x2' to each side of the equation.
3ax + 3x2 + -3x2 = -15x + -3x2

Combine like terms: 3x2 + -3x2 = 0
3ax + 0 = -15x + -3x2
3ax = -15x + -3x2

Divide each side by '3x'.
a = -5 + -1x

Simplifying
a = -5 + -1x

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