3a+3=20

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Solution for 3a+3=20 equation: 


Simplifying
3a + 3 = 20

Reorder the terms:
3 + 3a = 20

Solving
3 + 3a = 20

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 + 3a = 20 + -3

Combine like terms: 3 + -3 = 0
0 + 3a = 20 + -3
3a = 20 + -3

Combine like terms: 20 + -3 = 17
3a = 17

Divide each side by '3'.
a = 5.666666667

Simplifying
a = 5.666666667

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