# Evaluate -2/10+3/20-3/5

-210+320-35
Cancel the common factor of 2 and 10.
Factor 2 out of 2.
-2(1)10+320-35
Cancel the common factors.
Factor 2 out of 10.
-2⋅12⋅5+320-35
Cancel the common factor.
-2⋅12⋅5+320-35
Rewrite the expression.
-15+320-35
-15+320-35
-15+320-35
Combine fractions with similar denominators.
-1-35+320
Simplify the expression.
Subtract 3 from -1.
-45+320
Move the negative in front of the fraction.
-45+320
-45+320
To write -45 as a fraction with a common denominator, multiply by 44.
-45⋅44+320
Write each expression with a common denominator of 20, by multiplying each by an appropriate factor of 1.
Multiply 45 and 44.
-4⋅45⋅4+320
Multiply 5 by 4.
-4⋅420+320
-4⋅420+320
Combine the numerators over the common denominator.
-4⋅4+320
Simplify the numerator.
Multiply -4 by 4.
-16+320
-1320
-1320
Move the negative in front of the fraction.
-1320
The result can be shown in multiple forms.
Exact Form:
-1320
Decimal Form:
-0.65
Evaluate -2/10+3/20-3/5

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