2x57-99 equal 15
-31
53
-15
-15
35
15 minus 6 divided by 2 is equal to 12.
Eleven fifteenths minus ten fifteenths is equal to one fifteenth.
I think you mean "What does negative 10 minus 5 equal?" If not, please correct me. But, the correct answer would be -15 or negative 15.
42
180 - (23 x 2 x 3) - 15 = 27
One-twentieth. 4 fifths is equal to 16 twentieths. 3 fourths is equal to 15 twentieths. 16 minus 15 is one.