3a+1=13

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Solution for 3a+1=13 equation: 


Simplifying
3a + 1 = 13

Reorder the terms:
1 + 3a = 13

Solving
1 + 3a = 13

Solving for variable 'a'.

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

Add '-1' to each side of the equation.
1 + -1 + 3a = 13 + -1

Combine like terms: 1 + -1 = 0
0 + 3a = 13 + -1
3a = 13 + -1

Combine like terms: 13 + -1 = 12
3a = 12

Divide each side by '3'.
a = 4

Simplifying
a = 4

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