20-a=10a-2

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Solution for 20-a=10a-2 equation:


Simplifying
20 + -1a = 10a + -2

Reorder the terms:
20 + -1a = -2 + 10a

Solving
20 + -1a = -2 + 10a

Solving for variable 'a'.

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

Add '-10a' to each side of the equation.
20 + -1a + -10a = -2 + 10a + -10a

Combine like terms: -1a + -10a = -11a
20 + -11a = -2 + 10a + -10a

Combine like terms: 10a + -10a = 0
20 + -11a = -2 + 0
20 + -11a = -2

Add '-20' to each side of the equation.
20 + -20 + -11a = -2 + -20

Combine like terms: 20 + -20 = 0
0 + -11a = -2 + -20
-11a = -2 + -20

Combine like terms: -2 + -20 = -22
-11a = -22

Divide each side by '-11'.
a = 2

Simplifying
a = 2

 

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