2(a-10)=20

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Solution for 2(a-10)=20 equation: 


Simplifying
2(a + -10) = 20

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

Solving
-20 + 2a = 20

Solving for variable 'a'.

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

Add '20' to each side of the equation.
-20 + 20 + 2a = 20 + 20

Combine like terms: -20 + 20 = 0
0 + 2a = 20 + 20
2a = 20 + 20

Combine like terms: 20 + 20 = 40
2a = 40

Divide each side by '2'.
a = 20

Simplifying
a = 20

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