(-9)=a+(-4)

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


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

Reorder the terms:
-9 = -4 + a

Solving
-9 = -4 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-9 + -1a = -4 + a + -1a

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

Add '9' to each side of the equation.
-9 + 9 + -1a = -4 + 9

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

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

Divide each side by '-1'.
a = -5

Simplifying
a = -5

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