2a-1+7=

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Solution for 2a-1+7= equation: 


Simplifying
2a + -1 + 7 = 0

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

Combine like terms: -1 + 7 = 6
6 + 2a = 0

Solving
6 + 2a = 0

Solving for variable 'a'.

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

Add '-6' to each side of the equation.
6 + -6 + 2a = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 2a = 0 + -6
2a = 0 + -6

Combine like terms: 0 + -6 = -6
2a = -6

Divide each side by '2'.
a = -3

Simplifying
a = -3

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