a+2(a-5)=20

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Solution for a+2(a-5)=20 equation: 


Simplifying
a + 2(a + -5) = 20

Reorder the terms:
a + 2(-5 + a) = 20
a + (-5 * 2 + a * 2) = 20
a + (-10 + 2a) = 20

Reorder the terms:
-10 + a + 2a = 20

Combine like terms: a + 2a = 3a
-10 + 3a = 20

Solving
-10 + 3a = 20

Solving for variable 'a'.

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

Add '10' to each side of the equation.
-10 + 10 + 3a = 20 + 10

Combine like terms: -10 + 10 = 0
0 + 3a = 20 + 10
3a = 20 + 10

Combine like terms: 20 + 10 = 30
3a = 30

Divide each side by '3'.
a = 10

Simplifying
a = 10

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