71-12=9a

Solution for 71-12=9a equation:

Simplifying
71 + -12 = 9a

Combine like terms: 71 + -12 = 59
59 = 9a

Solving
59 = 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
59 + -9a = 9a + -9a

Combine like terms: 9a + -9a = 0
59 + -9a = 0

Add '-59' to each side of the equation.
59 + -59 + -9a = 0 + -59

Combine like terms: 59 + -59 = 0
0 + -9a = 0 + -59
-9a = 0 + -59

Combine like terms: 0 + -59 = -59
-9a = -59

Divide each side by '-9'.
a = 6.555555556

Simplifying
a = 6.555555556