20-6a+7a-13=19a+16-6a-9

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Solution for 20-6a+7a-13=19a+16-6a-9 equation:


Simplifying
20 + -6a + 7a + -13 = 19a + 16 + -6a + -9

Reorder the terms:
20 + -13 + -6a + 7a = 19a + 16 + -6a + -9

Combine like terms: 20 + -13 = 7
7 + -6a + 7a = 19a + 16 + -6a + -9

Combine like terms: -6a + 7a = 1a
7 + 1a = 19a + 16 + -6a + -9

Reorder the terms:
7 + 1a = 16 + -9 + 19a + -6a

Combine like terms: 16 + -9 = 7
7 + 1a = 7 + 19a + -6a

Combine like terms: 19a + -6a = 13a
7 + 1a = 7 + 13a

Add '-7' to each side of the equation.
7 + -7 + 1a = 7 + -7 + 13a

Combine like terms: 7 + -7 = 0
0 + 1a = 7 + -7 + 13a
1a = 7 + -7 + 13a

Combine like terms: 7 + -7 = 0
1a = 0 + 13a
1a = 13a

Solving
1a = 13a

Solving for variable 'a'.

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

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

Combine like terms: 1a + -13a = -12a
-12a = 13a + -13a

Combine like terms: 13a + -13a = 0
-12a = 0

Divide each side by '-12'.
a = 0

Simplifying
a = 0

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