3+a+a+2(3+a)=57

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Solution for 3+a+a+2(3+a)=57 equation:


Simplifying
3 + a + a + 2(3 + a) = 57
3 + a + a + (3 * 2 + a * 2) = 57
3 + a + a + (6 + 2a) = 57

Reorder the terms:
3 + 6 + a + a + 2a = 57

Combine like terms: 3 + 6 = 9
9 + a + a + 2a = 57

Combine like terms: a + a = 2a
9 + 2a + 2a = 57

Combine like terms: 2a + 2a = 4a
9 + 4a = 57

Solving
9 + 4a = 57

Solving for variable 'a'.

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

Add '-9' to each side of the equation.
9 + -9 + 4a = 57 + -9

Combine like terms: 9 + -9 = 0
0 + 4a = 57 + -9
4a = 57 + -9

Combine like terms: 57 + -9 = 48
4a = 48

Divide each side by '4'.
a = 12

Simplifying
a = 12

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