Evaluate 1/4-4/5

Math
14-45
To write 14 as a fraction with a common denominator, multiply by 55.
14⋅55-45
To write -45 as a fraction with a common denominator, multiply by 44.
14⋅55-45⋅44
Write each expression with a common denominator of 20, by multiplying each by an appropriate factor of 1.
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Multiply 14 and 55.
54⋅5-45⋅44
Multiply 4 by 5.
520-45⋅44
Multiply 45 and 44.
520-4⋅45⋅4
Multiply 5 by 4.
520-4⋅420
520-4⋅420
Combine the numerators over the common denominator.
5-4⋅420
Simplify the numerator.
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Multiply -4 by 4.
5-1620
Subtract 16 from 5.
-1120
-1120
Move the negative in front of the fraction.
-1120
The result can be shown in multiple forms.
Exact Form:
-1120
Decimal Form:
-0.55
Evaluate 1/4-4/5

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