7-9=a+1

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Solution for 7-9=a+1 equation:


Simplifying
7 + -9 = a + 1

Combine like terms: 7 + -9 = -2
-2 = a + 1

Reorder the terms:
-2 = 1 + a

Solving
-2 = 1 + 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.
-2 + -1a = 1 + a + -1a

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

Add '2' to each side of the equation.
-2 + 2 + -1a = 1 + 2

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

Combine like terms: 1 + 2 = 3
-1a = 3

Divide each side by '-1'.
a = -3

Simplifying
a = -3

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