Evaluate 7/10+1/4-1/5

Math
710+14-15
To write 710 as a fraction with a common denominator, multiply by 22.
710⋅22+14-15
To write 14 as a fraction with a common denominator, multiply by 55.
710⋅22+14⋅55-15
Write each expression with a common denominator of 20, by multiplying each by an appropriate factor of 1.
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Multiply 710 and 22.
7⋅210⋅2+14⋅55-15
Multiply 10 by 2.
7⋅220+14⋅55-15
Multiply 14 and 55.
7⋅220+54⋅5-15
Multiply 4 by 5.
7⋅220+520-15
7⋅220+520-15
Combine the numerators over the common denominator.
7⋅2+520-15
Simplify the numerator.
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Multiply 7 by 2.
14+520-15
Add 14 and 5.
1920-15
1920-15
To write -15 as a fraction with a common denominator, multiply by 44.
1920-15⋅44
Write each expression with a common denominator of 20, by multiplying each by an appropriate factor of 1.
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Multiply 15 and 44.
1920-45⋅4
Multiply 5 by 4.
1920-420
1920-420
Combine the numerators over the common denominator.
19-420
Subtract 4 from 19.
1520
Cancel the common factor of 15 and 20.
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Factor 5 out of 15.
5(3)20
Cancel the common factors.
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Factor 5 out of 20.
5⋅35⋅4
Cancel the common factor.
5⋅35⋅4
Rewrite the expression.
34
34
34
The result can be shown in multiple forms.
Exact Form:
34
Decimal Form:
0.75
Evaluate 7/10+1/4-1/5

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