Subtract 1/2-2/5

Math
12-25
To write 12 as a fraction with a common denominator, multiply by 55.
12⋅55-25
To write -25 as a fraction with a common denominator, multiply by 22.
12⋅55-25⋅22
Write each expression with a common denominator of 10, by multiplying each by an appropriate factor of 1.
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Multiply 12 and 55.
52⋅5-25⋅22
Multiply 2 by 5.
510-25⋅22
Multiply 25 and 22.
510-2⋅25⋅2
Multiply 5 by 2.
510-2⋅210
510-2⋅210
Combine the numerators over the common denominator.
5-2⋅210
Simplify the numerator.
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Multiply -2 by 2.
5-410
Subtract 4 from 5.
110
110
The result can be shown in multiple forms.
Exact Form:
110
Decimal Form:
0.1
Subtract 1/2-2/5

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