2a-5=20

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Solution for 2a-5=20 equation:


Simplifying
2a + -5 = 20

Reorder the terms:
-5 + 2a = 20

Solving
-5 + 2a = 20

Solving for variable 'a'.

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

Add '5' to each side of the equation.
-5 + 5 + 2a = 20 + 5

Combine like terms: -5 + 5 = 0
0 + 2a = 20 + 5
2a = 20 + 5

Combine like terms: 20 + 5 = 25
2a = 25

Divide each side by '2'.
a = 12.5

Simplifying
a = 12.5

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