-2a-7=3

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Solution for -2a-7=3 equation: 


Simplifying
-2a + -7 = 3

Reorder the terms:
-7 + -2a = 3

Solving
-7 + -2a = 3

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 + 7 + -2a = 3 + 7

Combine like terms: -7 + 7 = 0
0 + -2a = 3 + 7
-2a = 3 + 7

Combine like terms: 3 + 7 = 10
-2a = 10

Divide each side by '-2'.
a = -5

Simplifying
a = -5

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