What is the answer to 10n+12-9-7n+4n=31 ?

The answer to 10n+12-9-7n+4n=31 is n=4

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10n+12-9-7n+4n=31

10 n + 12 - 9 - 7 n + 4 n = 31

n = 4

Solution steps

10 n + 12 - 9 - 7 n + 4 n = 31

Group like terms

10 n - 7 n + 4 n + 12 - 9 = 31

Add similar elements:

10 n - 7 n + 4 n = 7 n

7 n + 12 - 9 = 31

Add/Subtract the numbers:

12 - 9 = 3

7 n + 3 = 31

Move

3

to the right side

7 n = 28

Divide both sides by

7

n = 4

m^{2} - 100 = 0

4 x^{2} - 12 x + 13 = 0

\frac{5 a - 2}{6} = 8

(x - 3) (x + 4) = x^{2} + 4

- 2 x - 1 \leq 0

What is the answer to 10n+12-9-7n+4n=31 ?
The answer to 10n+12-9-7n+4n=31 is n=4
Solve for n: 10n+12-9-7n+4n=31
The solution is n=4