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Popular >

21=3+4n+5n

Solution

21 = 3 + 4 n + 5 n

Solution

n = 2

Solution steps

21 = 3 + 4 n + 5 n

Switch sides

3 + 4 n + 5 n = 21

Add similar elements:

4 n + 5 n = 9 n

3 + 9 n = 21

Move

3

to the right side

9 n = 18

Divide both sides by

9

n = 2

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Frequently Asked Questions (FAQ)

What is the answer to 21=3+4n+5n ?
The answer to 21=3+4n+5n is n=2
Solve for n: 21=3+4n+5n
The solution is n=2