(5+a)-(9+b)=-4+(a-b)

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Solution for (5+a)-(9+b)=-4+(a-b) equation:


Simplifying
(5 + a) + -1(9 + b) = -4 + (a + -1b)

Remove parenthesis around (5 + a)
5 + a + -1(9 + b) = -4 + (a + -1b)
5 + a + (9 * -1 + b * -1) = -4 + (a + -1b)
5 + a + (-9 + -1b) = -4 + (a + -1b)

Reorder the terms:
5 + -9 + a + -1b = -4 + (a + -1b)

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

Remove parenthesis around (a + -1b)
-4 + a + -1b = -4 + a + -1b

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

Reorder the terms:
-4 + 4 + a + -1b = -4 + a + 4 + -1b

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

Reorder the terms:
a + -1b = -4 + 4 + a + -1b

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

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

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

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

Add 'b' to each side of the equation.
-1b + b = -1b + b

Combine like terms: -1b + b = 0
0 = -1b + b

Combine like terms: -1b + b = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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