2a-20=30

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Solution for 2a-20=30 equation: 


Simplifying
2a + -20 = 30

Reorder the terms:
-20 + 2a = 30

Solving
-20 + 2a = 30

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 = 30 + 20

Combine like terms: -20 + 20 = 0
0 + 2a = 30 + 20
2a = 30 + 20

Combine like terms: 30 + 20 = 50
2a = 50

Divide each side by '2'.
a = 25

Simplifying
a = 25

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