To subtract fractions, the denominators (bottom numbers) must be equal; so first convert the fractions into equivalent fractions with the same denominator. Then the numerators (top numbers) are subtracted and the resulting fraction simplified (if necessary):
1/4 - 11/16 = (1×4)/(4×4) - 11/16 = 4/16 - 11/16 = (4-11)/16 = -7/16
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15/16
Minus one (also known as negative one) is larger than minus eleven (also known as negative eleven).
-0.984375
one minus eleven twelfths = 1 - 11/12 = 12/12 - 11/12 = 1/12
11/16