8-2a-1=4+a

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Solution for 8-2a-1=4+a equation:


Simplifying
8 + -2a + -1 = 4 + a

Reorder the terms:
8 + -1 + -2a = 4 + a

Combine like terms: 8 + -1 = 7
7 + -2a = 4 + a

Solving
7 + -2a = 4 + 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.
7 + -2a + -1a = 4 + a + -1a

Combine like terms: -2a + -1a = -3a
7 + -3a = 4 + a + -1a

Combine like terms: a + -1a = 0
7 + -3a = 4 + 0
7 + -3a = 4

Add '-7' to each side of the equation.
7 + -7 + -3a = 4 + -7

Combine like terms: 7 + -7 = 0
0 + -3a = 4 + -7
-3a = 4 + -7

Combine like terms: 4 + -7 = -3
-3a = -3

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

Simplifying
a = 1

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