23-12+815

To write 23 as a fraction with a common denominator, multiply by 22.

23⋅22-12+815

To write -12 as a fraction with a common denominator, multiply by 33.

23⋅22-12⋅33+815

Multiply 23 and 22.

2⋅23⋅2-12⋅33+815

Multiply 3 by 2.

2⋅26-12⋅33+815

Multiply 12 and 33.

2⋅26-32⋅3+815

Multiply 2 by 3.

2⋅26-36+815

2⋅26-36+815

Combine the numerators over the common denominator.

2⋅2-36+815

Multiply 2 by 2.

4-36+815

Subtract 3 from 4.

16+815

16+815

To write 16 as a fraction with a common denominator, multiply by 55.

16⋅55+815

To write 815 as a fraction with a common denominator, multiply by 22.

16⋅55+815⋅22

Multiply 16 and 55.

56⋅5+815⋅22

Multiply 6 by 5.

530+815⋅22

Multiply 815 and 22.

530+8⋅215⋅2

Multiply 15 by 2.

530+8⋅230

530+8⋅230

Combine the numerators over the common denominator.

5+8⋅230

Multiply 8 by 2.

5+1630

Add 5 and 16.

2130

2130

Factor 3 out of 21.

3(7)30

Cancel the common factors.

Factor 3 out of 30.

3⋅73⋅10

Cancel the common factor.

3⋅73⋅10

Rewrite the expression.

710

710

710

The result can be shown in multiple forms.

Exact Form:

710

Decimal Form:

0.7

Evaluate 2/3-1/2+8/15