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3 years ago

15= -45 + 5n solve for n

Mathematics

2 answers:

Oksana_A [137]3 years ago

6 0

Answer: n=12

First, add 45 to both sides, giving you 60=5n

Then, divide both sides by 5, giving you 12=n

Step-by-step explanation:

Karolina [17]3 years ago

5 0

Answer:

n = 12

Step-by-step explanation:

Solve for n:

15 = 5 n - 45

15 = 5 n - 45 is equivalent to 5 n - 45 = 15:

5 n - 45 = 15

Add 45 to both sides:

5 n + (45 - 45) = 45 + 15

45 - 45 = 0:

5 n = 15 + 45

15 + 45 = 60:

5 n = 60

Divide both sides of 5 n = 60 by 5:

(5 n)/5 = 60/5

5/5 = 1:

n = 60/5

The gcd of 60 and 5 is 5, so 60/5 = (5×12)/(5×1) = 5/5×12 = 12:

Answer: n = 12

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