3(3a+4)-9(a+5)=a+8(a-3)

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Solution for 3(3a+4)-9(a+5)=a+8(a-3) equation:


Simplifying
3(3a + 4) + -9(a + 5) = a + 8(a + -3)

Reorder the terms:
3(4 + 3a) + -9(a + 5) = a + 8(a + -3)
(4 * 3 + 3a * 3) + -9(a + 5) = a + 8(a + -3)
(12 + 9a) + -9(a + 5) = a + 8(a + -3)

Reorder the terms:
12 + 9a + -9(5 + a) = a + 8(a + -3)
12 + 9a + (5 * -9 + a * -9) = a + 8(a + -3)
12 + 9a + (-45 + -9a) = a + 8(a + -3)

Reorder the terms:
12 + -45 + 9a + -9a = a + 8(a + -3)

Combine like terms: 12 + -45 = -33
-33 + 9a + -9a = a + 8(a + -3)

Combine like terms: 9a + -9a = 0
-33 + 0 = a + 8(a + -3)
-33 = a + 8(a + -3)

Reorder the terms:
-33 = a + 8(-3 + a)
-33 = a + (-3 * 8 + a * 8)
-33 = a + (-24 + 8a)

Reorder the terms:
-33 = -24 + a + 8a

Combine like terms: a + 8a = 9a
-33 = -24 + 9a

Solving
-33 = -24 + 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.
-33 + -9a = -24 + 9a + -9a

Combine like terms: 9a + -9a = 0
-33 + -9a = -24 + 0
-33 + -9a = -24

Add '33' to each side of the equation.
-33 + 33 + -9a = -24 + 33

Combine like terms: -33 + 33 = 0
0 + -9a = -24 + 33
-9a = -24 + 33

Combine like terms: -24 + 33 = 9
-9a = 9

Divide each side by '-9'.
a = -1

Simplifying
a = -1

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