-2-7a=103

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Solution for -2-7a=103 equation: 


Simplifying
-2 + -7a = 103

Solving
-2 + -7a = 103

Solving for variable 'a'.

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

Add '2' to each side of the equation.
-2 + 2 + -7a = 103 + 2

Combine like terms: -2 + 2 = 0
0 + -7a = 103 + 2
-7a = 103 + 2

Combine like terms: 103 + 2 = 105
-7a = 105

Divide each side by '-7'.
a = -15

Simplifying
a = -15

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