-1a-7=6

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Solution for -1a-7=6 equation:


Simplifying
-1a + -7 = 6

Reorder the terms:
-7 + -1a = 6

Solving
-7 + -1a = 6

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 + -1a = 6 + 7

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

Combine like terms: 6 + 7 = 13
-1a = 13

Divide each side by '-1'.
a = -13

Simplifying
a = -13

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