(-a-18)=7

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Solution for (-a-18)=7 equation:


Simplifying
(-1a + -18) = 7

Reorder the terms:
(-18 + -1a) = 7

Remove parenthesis around (-18 + -1a)
-18 + -1a = 7

Solving
-18 + -1a = 7

Solving for variable 'a'.

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

Add '18' to each side of the equation.
-18 + 18 + -1a = 7 + 18

Combine like terms: -18 + 18 = 0
0 + -1a = 7 + 18
-1a = 7 + 18

Combine like terms: 7 + 18 = 25
-1a = 25

Divide each side by '-1'.
a = -25

Simplifying
a = -25

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