a+2(a-2)=21+3

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Solution for a+2(a-2)=21+3 equation:


Simplifying
a + 2(a + -2) = 21 + 3

Reorder the terms:
a + 2(-2 + a) = 21 + 3
a + (-2 * 2 + a * 2) = 21 + 3
a + (-4 + 2a) = 21 + 3

Reorder the terms:
-4 + a + 2a = 21 + 3

Combine like terms: a + 2a = 3a
-4 + 3a = 21 + 3

Combine like terms: 21 + 3 = 24
-4 + 3a = 24

Solving
-4 + 3a = 24

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 = 24 + 4

Combine like terms: -4 + 4 = 0
0 + 3a = 24 + 4
3a = 24 + 4

Combine like terms: 24 + 4 = 28
3a = 28

Divide each side by '3'.
a = 9.333333333

Simplifying
a = 9.333333333

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