9a-5(a+1)=(a-3)

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Solution for 9a-5(a+1)=(a-3) equation:


Simplifying
9a + -5(a + 1) = (a + -3)

Reorder the terms:
9a + -5(1 + a) = (a + -3)
9a + (1 * -5 + a * -5) = (a + -3)
9a + (-5 + -5a) = (a + -3)

Reorder the terms:
-5 + 9a + -5a = (a + -3)

Combine like terms: 9a + -5a = 4a
-5 + 4a = (a + -3)

Reorder the terms:
-5 + 4a = (-3 + a)

Remove parenthesis around (-3 + a)
-5 + 4a = -3 + a

Solving
-5 + 4a = -3 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-5 + 4a + -1a = -3 + a + -1a

Combine like terms: 4a + -1a = 3a
-5 + 3a = -3 + a + -1a

Combine like terms: a + -1a = 0
-5 + 3a = -3 + 0
-5 + 3a = -3

Add '5' to each side of the equation.
-5 + 5 + 3a = -3 + 5

Combine like terms: -5 + 5 = 0
0 + 3a = -3 + 5
3a = -3 + 5

Combine like terms: -3 + 5 = 2
3a = 2

Divide each side by '3'.
a = 0.6666666667

Simplifying
a = 0.6666666667

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