3(a+3)-6=21-9(x+5)

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Solution for 3(a+3)-6=21-9(x+5) equation:


Simplifying
3(a + 3) + -6 = 21 + -9(x + 5)

Reorder the terms:
3(3 + a) + -6 = 21 + -9(x + 5)
(3 * 3 + a * 3) + -6 = 21 + -9(x + 5)
(9 + 3a) + -6 = 21 + -9(x + 5)

Reorder the terms:
9 + -6 + 3a = 21 + -9(x + 5)

Combine like terms: 9 + -6 = 3
3 + 3a = 21 + -9(x + 5)

Reorder the terms:
3 + 3a = 21 + -9(5 + x)
3 + 3a = 21 + (5 * -9 + x * -9)
3 + 3a = 21 + (-45 + -9x)

Combine like terms: 21 + -45 = -24
3 + 3a = -24 + -9x

Solving
3 + 3a = -24 + -9x

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 3a = -24 + -3 + -9x

Combine like terms: 3 + -3 = 0
0 + 3a = -24 + -3 + -9x
3a = -24 + -3 + -9x

Combine like terms: -24 + -3 = -27
3a = -27 + -9x

Divide each side by '3'.
a = -9 + -3x

Simplifying
a = -9 + -3x

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