Basic Math Examples

Evaluate (10/21)÷(-15/7)
1021÷(-157)1021÷(157)
Step 1
To divide by a fraction, multiply by its reciprocal.
1021(-715)1021(715)
Step 2
Cancel the common factor of 55.
Tap for more steps...
Step 2.1
Move the leading negative in -715715 into the numerator.
1021-7151021715
Step 2.2
Factor 55 out of 1010.
5(2)21-7155(2)21715
Step 2.3
Factor 55 out of 1515.
5221-7535221753
Step 2.4
Cancel the common factor.
5221-753
Step 2.5
Rewrite the expression.
221-73
221-73
Step 3
Cancel the common factor of 7.
Tap for more steps...
Step 3.1
Factor 7 out of 21.
27(3)-73
Step 3.2
Factor 7 out of -7.
2737-13
Step 3.3
Cancel the common factor.
2737-13
Step 3.4
Rewrite the expression.
23-13
23-13
Step 4
Multiply 23 by -13.
2-133
Step 5
Simplify the expression.
Tap for more steps...
Step 5.1
Multiply 2 by -1.
-233
Step 5.2
Multiply 3 by 3.
-29
Step 5.3
Move the negative in front of the fraction.
-29
-29
Step 6
The result can be shown in multiple forms.
Exact Form:
-29
Decimal Form:
-0.2
 [x2  12  π  xdx ]