18-5a=4a+9

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Solution for 18-5a=4a+9 equation:


Simplifying
18 + -5a = 4a + 9

Reorder the terms:
18 + -5a = 9 + 4a

Solving
18 + -5a = 9 + 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
18 + -5a + -4a = 9 + 4a + -4a

Combine like terms: -5a + -4a = -9a
18 + -9a = 9 + 4a + -4a

Combine like terms: 4a + -4a = 0
18 + -9a = 9 + 0
18 + -9a = 9

Add '-18' to each side of the equation.
18 + -18 + -9a = 9 + -18

Combine like terms: 18 + -18 = 0
0 + -9a = 9 + -18
-9a = 9 + -18

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

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

Simplifying
a = 1

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