3+4a=13

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Solution for 3+4a=13 equation: 


Simplifying
3 + 4a = 13

Solving
3 + 4a = 13

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 4a = 13 + -3

Combine like terms: 3 + -3 = 0
0 + 4a = 13 + -3
4a = 13 + -3

Combine like terms: 13 + -3 = 10
4a = 10

Divide each side by '4'.
a = 2.5

Simplifying
a = 2.5

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