Question

What is 12 = 1 + a/1 -a?

Answer 1

There is no solution

Explanation:

There are no values of (a) that make the equation true.

Answer 2

a = 11/13

Explanation:

Multiply both sides by 1 - a

12(1 - a) = 1 + a

= 12 - 12a = 1 + a

Subtract 12 from both sides

= -12a = -11 + a

Subtract a from both side

-13a = -11

Divide by -13 each side

-13a/13 = -11/-13

= a = 11/13