Evaluate 4/5-5/7

Math
45-57
To write 45 as a fraction with a common denominator, multiply by 77.
45⋅77-57
To write -57 as a fraction with a common denominator, multiply by 55.
45⋅77-57⋅55
Write each expression with a common denominator of 35, by multiplying each by an appropriate factor of 1.
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Multiply 45 and 77.
4⋅75⋅7-57⋅55
Multiply 5 by 7.
4⋅735-57⋅55
Multiply 57 and 55.
4⋅735-5⋅57⋅5
Multiply 7 by 5.
4⋅735-5⋅535
4⋅735-5⋅535
Combine the numerators over the common denominator.
4⋅7-5⋅535
Simplify the numerator.
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Multiply 4 by 7.
28-5⋅535
Multiply -5 by 5.
28-2535
Subtract 25 from 28.
335
335
The result can be shown in multiple forms.
Exact Form:
335
Decimal Form:
0.0857142‾
Evaluate 4/5-5/7

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