3a+4=40

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Solution for 3a+4=40 equation: 


Simplifying
3a + 4 = 40

Reorder the terms:
4 + 3a = 40

Solving
4 + 3a = 40

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 + 3a = 40 + -4

Combine like terms: 4 + -4 = 0
0 + 3a = 40 + -4
3a = 40 + -4

Combine like terms: 40 + -4 = 36
3a = 36

Divide each side by '3'.
a = 12

Simplifying
a = 12

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