10a+1-8a=81

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Solution for 10a+1-8a=81 equation:


Simplifying
10a + 1 + -8a = 81

Reorder the terms:
1 + 10a + -8a = 81

Combine like terms: 10a + -8a = 2a
1 + 2a = 81

Solving
1 + 2a = 81

Solving for variable 'a'.

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

Add '-1' to each side of the equation.
1 + -1 + 2a = 81 + -1

Combine like terms: 1 + -1 = 0
0 + 2a = 81 + -1
2a = 81 + -1

Combine like terms: 81 + -1 = 80
2a = 80

Divide each side by '2'.
a = 40

Simplifying
a = 40

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