-1(a+5)-7=a

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Solution for -1(a+5)-7=a equation:


Simplifying
-1(a + 5) + -7 = a

Reorder the terms:
-1(5 + a) + -7 = a
(5 * -1 + a * -1) + -7 = a
(-5 + -1a) + -7 = a

Reorder the terms:
-5 + -7 + -1a = a

Combine like terms: -5 + -7 = -12
-12 + -1a = a

Solving
-12 + -1a = a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-12 + -1a + -1a = a + -1a

Combine like terms: -1a + -1a = -2a
-12 + -2a = a + -1a

Combine like terms: a + -1a = 0
-12 + -2a = 0

Add '12' to each side of the equation.
-12 + 12 + -2a = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -2a = 0 + 12
-2a = 0 + 12

Combine like terms: 0 + 12 = 12
-2a = 12

Divide each side by '-2'.
a = -6

Simplifying
a = -6

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