3+1-a=5

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Solution for 3+1-a=5 equation: 


Simplifying
3 + 1 + -1a = 5

Combine like terms: 3 + 1 = 4
4 + -1a = 5

Solving
4 + -1a = 5

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + -1a = 5 + -4

Combine like terms: 4 + -4 = 0
0 + -1a = 5 + -4
-1a = 5 + -4

Combine like terms: 5 + -4 = 1
-1a = 1

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

Simplifying
a = -1

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