6a-3(a-5)=a+9

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Solution for 6a-3(a-5)=a+9 equation:


Simplifying
6a + -3(a + -5) = a + 9

Reorder the terms:
6a + -3(-5 + a) = a + 9
6a + (-5 * -3 + a * -3) = a + 9
6a + (15 + -3a) = a + 9

Reorder the terms:
15 + 6a + -3a = a + 9

Combine like terms: 6a + -3a = 3a
15 + 3a = a + 9

Reorder the terms:
15 + 3a = 9 + a

Solving
15 + 3a = 9 + 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.
15 + 3a + -1a = 9 + a + -1a

Combine like terms: 3a + -1a = 2a
15 + 2a = 9 + a + -1a

Combine like terms: a + -1a = 0
15 + 2a = 9 + 0
15 + 2a = 9

Add '-15' to each side of the equation.
15 + -15 + 2a = 9 + -15

Combine like terms: 15 + -15 = 0
0 + 2a = 9 + -15
2a = 9 + -15

Combine like terms: 9 + -15 = -6
2a = -6

Divide each side by '2'.
a = -3

Simplifying
a = -3

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