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Big Ideas Math: Modeling Real Life, Grade 6 View details

4. Writing Equations in Two Variables

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Exercise 6 Page 270

Rewrite the expression so that all of the numbers are fractions.

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Practice makes perfect

Before we evaluate the expression, let's first rewrite the expression so that all of the numbers are fractions.

7 ÷ 51/4

MixedToFrac

a bc=a* c+b/c

7 ÷ 5* 4+1/4

Multiply

7 ÷ 20+1/4

AddTerms

Add terms

7 ÷ 21/4

NumberToFrac

a = 1* a/1

7* 1/1 ÷ 21/4

Multiply

7/1 ÷ 21/4

Recall that dividing fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. 7/1 ÷ 21/4 =7/1*4/21 When we multiply fractions, we need to remember that the product of two fractions is equal to the product of the numerators divided by the product of the denominators. Let's find the given product!

7/1*4/21

MultFrac

Multiply fractions

7* 4/1* 21

Multiply

28/21

ReduceFrac

a/b=.a / 7./.b / 7.

28/ 7/28/ 7

CalcQuot

Calculate quotient

4/3