2a+1=20

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Solution for 2a+1=20 equation: 


Simplifying
2a + 1 = 20

Reorder the terms:
1 + 2a = 20

Solving
1 + 2a = 20

Solving for variable 'a'.

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

Add '-1' to each side of the equation.
1 + -1 + 2a = 20 + -1

Combine like terms: 1 + -1 = 0
0 + 2a = 20 + -1
2a = 20 + -1

Combine like terms: 20 + -1 = 19
2a = 19

Divide each side by '2'.
a = 9.5

Simplifying
a = 9.5

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