4a-9=3(a-9)

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


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

Reorder the terms:
-9 + 4a = 3(a + -9)

Reorder the terms:
-9 + 4a = 3(-9 + a)
-9 + 4a = (-9 * 3 + a * 3)
-9 + 4a = (-27 + 3a)

Solving
-9 + 4a = -27 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
-9 + 4a + -3a = -27 + 3a + -3a

Combine like terms: 4a + -3a = 1a
-9 + 1a = -27 + 3a + -3a

Combine like terms: 3a + -3a = 0
-9 + 1a = -27 + 0
-9 + 1a = -27

Add '9' to each side of the equation.
-9 + 9 + 1a = -27 + 9

Combine like terms: -9 + 9 = 0
0 + 1a = -27 + 9
1a = -27 + 9

Combine like terms: -27 + 9 = -18
1a = -18

Divide each side by '1'.
a = -18

Simplifying
a = -18

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