9+5a=-a-2(-5a-4)

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Solution for 9+5a=-a-2(-5a-4) equation:


Simplifying
9 + 5a = -1a + -2(-5a + -4)

Reorder the terms:
9 + 5a = -1a + -2(-4 + -5a)
9 + 5a = -1a + (-4 * -2 + -5a * -2)
9 + 5a = -1a + (8 + 10a)

Reorder the terms:
9 + 5a = 8 + -1a + 10a

Combine like terms: -1a + 10a = 9a
9 + 5a = 8 + 9a

Solving
9 + 5a = 8 + 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
9 + 5a + -9a = 8 + 9a + -9a

Combine like terms: 5a + -9a = -4a
9 + -4a = 8 + 9a + -9a

Combine like terms: 9a + -9a = 0
9 + -4a = 8 + 0
9 + -4a = 8

Add '-9' to each side of the equation.
9 + -9 + -4a = 8 + -9

Combine like terms: 9 + -9 = 0
0 + -4a = 8 + -9
-4a = 8 + -9

Combine like terms: 8 + -9 = -1
-4a = -1

Divide each side by '-4'.
a = 0.25

Simplifying
a = 0.25

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