4a+5-5a+4=

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


Simplifying
4a + 5 + -5a + 4 = 0

Reorder the terms:
5 + 4 + 4a + -5a = 0

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

Combine like terms: 4a + -5a = -1a
9 + -1a = 0

Solving
9 + -1a = 0

Solving for variable 'a'.

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

Add '-9' to each side of the equation.
9 + -9 + -1a = 0 + -9

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

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

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

Simplifying
a = 9

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