a+2a-1-3=a

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Solution for a+2a-1-3=a equation:


Simplifying
a + 2a + -1 + -3 = a

Reorder the terms:
-1 + -3 + a + 2a = a

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

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

Solving
-4 + 3a = 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.
-4 + 3a + -1a = a + -1a

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

Combine like terms: a + -1a = 0
-4 + 2a = 0

Add '4' to each side of the equation.
-4 + 4 + 2a = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 2a = 0 + 4
2a = 0 + 4

Combine like terms: 0 + 4 = 4
2a = 4

Divide each side by '2'.
a = 2

Simplifying
a = 2

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