Big Ideas Math: Modeling Real Life, Grade 7
BI
Big Ideas Math: Modeling Real Life, Grade 7 View details
4. Writing and Solving Proportions
Continue to next subchapter

Exercise 3 Page 204

24 divided by what number equals 8? Divide 21 by that number.

x=7

Practice makes perfect
Let's pay close attention to the given proportion. 21/24 = x/8

We need to find the number such that 24 divided by that number equals 8. 24 Ă· ? =8 We divide 24 by 3 to get 8, so we will also divide 21 by 3 to find the value of x.

21 : 3 = 7 = x

We see that x = 7.