-20=2(4+a)

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Solution for -20=2(4+a) equation:


Simplifying
-20 = 2(4 + a)
-20 = (4 * 2 + a * 2)
-20 = (8 + 2a)

Solving
-20 = 8 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
-20 + -2a = 8 + 2a + -2a

Combine like terms: 2a + -2a = 0
-20 + -2a = 8 + 0
-20 + -2a = 8

Add '20' to each side of the equation.
-20 + 20 + -2a = 8 + 20

Combine like terms: -20 + 20 = 0
0 + -2a = 8 + 20
-2a = 8 + 20

Combine like terms: 8 + 20 = 28
-2a = 28

Divide each side by '-2'.
a = -14

Simplifying
a = -14

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