2a-b+1=0

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Solution for 2a-b+1=0 equation:


Simplifying
2a + -1b + 1 = 0

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

Solving
1 + 2a + -1b = 0

Solving for variable 'a'.

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

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

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

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

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

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

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

Divide each side by '2'.
a = -0.5 + 0.5b

Simplifying
a = -0.5 + 0.5b

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