Exercise 154 Page 445

Practice makes perfect

Before we evaluate the expression, recall that dividing fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. 12/5÷7/10=12/5* 10/7 When multiplying fractions, remember that the product of two fractions is equal to the product of the numerators over the product of the denominators.

12/5* 10/7

MultFrac

Multiply fractions

12* 10/5* 7

Multiply

120/35

ReduceFrac

a/b=.a /5./.b /5.

120/5/35/5

CalcQuot

Calculate quotient

24/7

Once again, recall that dividing fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. 9/4÷(- 1/3)=9/4* (- 3/1) When multiplying fractions, remember that the product of two fractions is equal to the product of the numerators over the product of the denominators.

9/4* (- 3/1)

MultPosNeg

a(- b)=- a * b

- 9/4* 3/1

MultFrac

Multiply fractions

- 9* 3/4* 1

Multiply

- 27/4

Dividing fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. - 3/5÷(- 1/6)=- 3/5* (- 6/1) When multiplying fractions, remember that the product of two fractions is equal to the product of the numerators over the product of the denominators.

- 3/5* (- 6/1)

MultNegNegOnePar

- a(- b)=a* b

3/5* 6/1

MultFrac

Multiply fractions

3* 6/5* 1

Multiply

18/5

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