12-(b+a)-5+(2a-b)=

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Solution for 12-(b+a)-5+(2a-b)= equation:


Simplifying
12 + -1(b + a) + -5 + (2a + -1b) = 0

Reorder the terms:
12 + -1(a + b) + -5 + (2a + -1b) = 0
12 + (a * -1 + b * -1) + -5 + (2a + -1b) = 0
12 + (-1a + -1b) + -5 + (2a + -1b) = 0

Remove parenthesis around (2a + -1b)
12 + -1a + -1b + -5 + 2a + -1b = 0

Reorder the terms:
12 + -5 + -1a + 2a + -1b + -1b = 0

Combine like terms: 12 + -5 = 7
7 + -1a + 2a + -1b + -1b = 0

Combine like terms: -1a + 2a = 1a
7 + 1a + -1b + -1b = 0

Combine like terms: -1b + -1b = -2b
7 + 1a + -2b = 0

Solving
7 + 1a + -2b = 0

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + 1a + -7 + -2b = 0 + -7

Reorder the terms:
7 + -7 + 1a + -2b = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 1a + -2b = 0 + -7
1a + -2b = 0 + -7

Combine like terms: 0 + -7 = -7
1a + -2b = -7

Add '2b' to each side of the equation.
1a + -2b + 2b = -7 + 2b

Combine like terms: -2b + 2b = 0
1a + 0 = -7 + 2b
1a = -7 + 2b

Divide each side by '1'.
a = -7 + 2b

Simplifying
a = -7 + 2b

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