21+2a=33

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Solution for 21+2a=33 equation:


Simplifying
21 + 2a = 33

Solving
21 + 2a = 33

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -21 + 2a = 33 + -21

Combine like terms: 21 + -21 = 0
0 + 2a = 33 + -21
2a = 33 + -21

Combine like terms: 33 + -21 = 12
2a = 12

Divide each side by '2'.
a = 6

Simplifying
a = 6

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