2(1+a)-2(a+7)=-2a-4a

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Solution for 2(1+a)-2(a+7)=-2a-4a equation:


Simplifying
2(1 + a) + -2(a + 7) = -2a + -4a
(1 * 2 + a * 2) + -2(a + 7) = -2a + -4a
(2 + 2a) + -2(a + 7) = -2a + -4a

Reorder the terms:
2 + 2a + -2(7 + a) = -2a + -4a
2 + 2a + (7 * -2 + a * -2) = -2a + -4a
2 + 2a + (-14 + -2a) = -2a + -4a

Reorder the terms:
2 + -14 + 2a + -2a = -2a + -4a

Combine like terms: 2 + -14 = -12
-12 + 2a + -2a = -2a + -4a

Combine like terms: 2a + -2a = 0
-12 + 0 = -2a + -4a
-12 = -2a + -4a

Combine like terms: -2a + -4a = -6a
-12 = -6a

Solving
-12 = -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.
-12 + 6a = -6a + 6a

Combine like terms: -6a + 6a = 0
-12 + 6a = 0

Add '12' to each side of the equation.
-12 + 12 + 6a = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 6a = 0 + 12
6a = 0 + 12

Combine like terms: 0 + 12 = 12
6a = 12

Divide each side by '6'.
a = 2

Simplifying
a = 2

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