2-(1+a)(15+3)=2

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Solution for 2-(1+a)(15+3)=2 equation: 


Simplifying
2 + -1(1 + a)(15 + 3) = 2

Combine like terms: 15 + 3 = 18
2 + -1(1 + a)(18) = 2

Reorder the terms for easier multiplication:
2 + -1 * 18(1 + a) = 2

Multiply -1 * 18
2 + -18(1 + a) = 2
2 + (1 * -18 + a * -18) = 2
2 + (-18 + -18a) = 2

Combine like terms: 2 + -18 = -16
-16 + -18a = 2

Solving
-16 + -18a = 2

Solving for variable 'a'.

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

Add '16' to each side of the equation.
-16 + 16 + -18a = 2 + 16

Combine like terms: -16 + 16 = 0
0 + -18a = 2 + 16
-18a = 2 + 16

Combine like terms: 2 + 16 = 18
-18a = 18

Divide each side by '-18'.
a = -1

Simplifying
a = -1

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