Find the value of n in each of the following proportions. 1. 18/n = 21/28

2. 12/16 = n/64

24

Step-by-step explanation:

18/n = 21/28                    You can cancel, but calculators make that unnecessary.   Cross multiply

21n = 18 * 28

21n = 504                         Divide by 21

n = 504 / 21

n = 24

12/16 = n / 64                    Cross Multiply

16n = 12 * 64

16n = 768                         Divide by 16

n = 768/16

n = 48

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

the correct answer to your question is a. 4^4

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