2a+19=a+20

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Solution for 2a+19=a+20 equation:


Simplifying
2a + 19 = a + 20

Reorder the terms:
19 + 2a = a + 20

Reorder the terms:
19 + 2a = 20 + a

Solving
19 + 2a = 20 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
19 + 2a + -1a = 20 + a + -1a

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

Combine like terms: a + -1a = 0
19 + 1a = 20 + 0
19 + 1a = 20

Add '-19' to each side of the equation.
19 + -19 + 1a = 20 + -19

Combine like terms: 19 + -19 = 0
0 + 1a = 20 + -19
1a = 20 + -19

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

Divide each side by '1'.
a = 1

Simplifying
a = 1

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