Evaluate -1/2-1/5

Math
-12-15
To write -12 as a fraction with a common denominator, multiply by 55.
-12⋅55-15
To write -15 as a fraction with a common denominator, multiply by 22.
-12⋅55-15⋅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⋅5-15⋅22
Multiply 2 by 5.
-510-15⋅22
Multiply 15 and 22.
-510-25⋅2
Multiply 5 by 2.
-510-210
-510-210
Combine the numerators over the common denominator.
-5-210
Subtract 2 from -5.
-710
Move the negative in front of the fraction.
-710
The result can be shown in multiple forms.
Exact Form:
-710
Decimal Form:
-0.7
Evaluate -1/2-1/5

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