4-3+(2a+8)=-20-8a

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Solution for 4-3+(2a+8)=-20-8a equation: 


Simplifying
4 + -3 + (2a + 8) = -20 + -8a

Reorder the terms:
4 + -3 + (8 + 2a) = -20 + -8a

Remove parenthesis around (8 + 2a)
4 + -3 + 8 + 2a = -20 + -8a

Combine like terms: 4 + -3 = 1
1 + 8 + 2a = -20 + -8a

Combine like terms: 1 + 8 = 9
9 + 2a = -20 + -8a

Solving
9 + 2a = -20 + -8a

Solving for variable 'a'.

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

Add '8a' to each side of the equation.
9 + 2a + 8a = -20 + -8a + 8a

Combine like terms: 2a + 8a = 10a
9 + 10a = -20 + -8a + 8a

Combine like terms: -8a + 8a = 0
9 + 10a = -20 + 0
9 + 10a = -20

Add '-9' to each side of the equation.
9 + -9 + 10a = -20 + -9

Combine like terms: 9 + -9 = 0
0 + 10a = -20 + -9
10a = -20 + -9

Combine like terms: -20 + -9 = -29
10a = -29

Divide each side by '10'.
a = -2.9

Simplifying
a = -2.9

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