Evaluate 2/5-9/4

Math
25-94
To write 25 as a fraction with a common denominator, multiply by 44.
25⋅44-94
To write -94 as a fraction with a common denominator, multiply by 55.
25⋅44-94⋅55
Write each expression with a common denominator of 20, by multiplying each by an appropriate factor of 1.
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Multiply 25 and 44.
2⋅45⋅4-94⋅55
Multiply 5 by 4.
2⋅420-94⋅55
Multiply 94 and 55.
2⋅420-9⋅54⋅5
Multiply 4 by 5.
2⋅420-9⋅520
2⋅420-9⋅520
Combine the numerators over the common denominator.
2⋅4-9⋅520
Simplify the numerator.
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Multiply 2 by 4.
8-9⋅520
Multiply -9 by 5.
8-4520
Subtract 45 from 8.
-3720
-3720
Move the negative in front of the fraction.
-3720
The result can be shown in multiple forms.
Exact Form:
-3720
Decimal Form:
-1.85
Mixed Number Form:
-11720
Evaluate 2/5-9/4

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