1+3a=40

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Solution for 1+3a=40 equation: 


Simplifying
1 + 3a = 40

Solving
1 + 3a = 40

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 = 40 + -1

Combine like terms: 1 + -1 = 0
0 + 3a = 40 + -1
3a = 40 + -1

Combine like terms: 40 + -1 = 39
3a = 39

Divide each side by '3'.
a = 13

Simplifying
a = 13

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