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 19 Page 208

Use the Multiplication Property of Equality to eliminate the division.

n=15, see solution.

Practice makes perfect
Notice that in the given equation n is only present within the numerator of a single fraction. 35/28 = n/12 Let's use the Multiplication Property of Equality and multiply multiply both sides of the equation by 12. This will eliminate the denominator of the fraction and isolate n.
35/28 = n/12
12*35/28 = 12 * n/12
12*35/28 = n
420/28 = n
15 = n
n=15