3a+7a=20

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Solution for 3a+7a=20 equation: 


Simplifying
3a + 7a = 20

Combine like terms: 3a + 7a = 10a
10a = 20

Solving
10a = 20

Solving for variable 'a'.

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

Divide each side by '10'.
a = 2

Simplifying
a = 2

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