2a-21.7=a+13

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Solution for 2a-21.7=a+13 equation:


Simplifying
2a + -21.7 = a + 13

Reorder the terms:
-21.7 + 2a = a + 13

Reorder the terms:
-21.7 + 2a = 13 + a

Solving
-21.7 + 2a = 13 + 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.
-21.7 + 2a + -1a = 13 + a + -1a

Combine like terms: 2a + -1a = 1a
-21.7 + 1a = 13 + a + -1a

Combine like terms: a + -1a = 0
-21.7 + 1a = 13 + 0
-21.7 + 1a = 13

Add '21.7' to each side of the equation.
-21.7 + 21.7 + 1a = 13 + 21.7

Combine like terms: -21.7 + 21.7 = 0.0
0.0 + 1a = 13 + 21.7
1a = 13 + 21.7

Combine like terms: 13 + 21.7 = 34.7
1a = 34.7

Divide each side by '1'.
a = 34.7

Simplifying
a = 34.7

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