5a+4=9a-16

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Solution for 5a+4=9a-16 equation:


Simplifying
5a + 4 = 9a + -16

Reorder the terms:
4 + 5a = 9a + -16

Reorder the terms:
4 + 5a = -16 + 9a

Solving
4 + 5a = -16 + 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.
4 + 5a + -9a = -16 + 9a + -9a

Combine like terms: 5a + -9a = -4a
4 + -4a = -16 + 9a + -9a

Combine like terms: 9a + -9a = 0
4 + -4a = -16 + 0
4 + -4a = -16

Add '-4' to each side of the equation.
4 + -4 + -4a = -16 + -4

Combine like terms: 4 + -4 = 0
0 + -4a = -16 + -4
-4a = -16 + -4

Combine like terms: -16 + -4 = -20
-4a = -20

Divide each side by '-4'.
a = 5

Simplifying
a = 5

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