4a+9=5-4a

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


Simplifying
4a + 9 = 5 + -4a

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

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

Combine like terms: 4a + 4a = 8a
9 + 8a = 5 + -4a + 4a

Combine like terms: -4a + 4a = 0
9 + 8a = 5 + 0
9 + 8a = 5

Add '-9' to each side of the equation.
9 + -9 + 8a = 5 + -9

Combine like terms: 9 + -9 = 0
0 + 8a = 5 + -9
8a = 5 + -9

Combine like terms: 5 + -9 = -4
8a = -4

Divide each side by '8'.
a = -0.5

Simplifying
a = -0.5

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