10 5/12 - 12 7/12 = in simplest form

-13/6 or (in mixed number form) - 2 1/6

Step-by-step explanation:

Rewriting our equation with parts separated

=10+512-12-712

Solving the whole number parts

10-12=-2

Solving the fraction parts

512-712=-212

Reducing the fraction part, 2/12,

-212=-16

Combining the whole and fraction parts

-2-16=-216

Another way to do it:

Convert any mixed numbers to fractions.

Then your initial equation becomes:

125/12-151/12

Applying the fractions formula for subtraction,

= (125*12) - (151*12) / 12*12

=1500 - 1812 / 144

=-312/144

Simplifying - 312/144, the answer is

=-2 1/6