81=3a-8a-5a

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Solution for 81=3a-8a-5a equation:


Simplifying
81 = 3a + -8a + -5a

Combine like terms: 3a + -8a = -5a
81 = -5a + -5a

Combine like terms: -5a + -5a = -10a
81 = -10a

Solving
81 = -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.
81 + 10a = -10a + 10a

Combine like terms: -10a + 10a = 0
81 + 10a = 0

Add '-81' to each side of the equation.
81 + -81 + 10a = 0 + -81

Combine like terms: 81 + -81 = 0
0 + 10a = 0 + -81
10a = 0 + -81

Combine like terms: 0 + -81 = -81
10a = -81

Divide each side by '10'.
a = -8.1

Simplifying
a = -8.1

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