Question

Can someone please solve 10n - 3 = 7n + 21

Answer 1

$10 n-3 = 7n+21$

Add 3 to both sides :

$10n-3+3=7n+21+3$

$10n=7n+24$

Subtract  7 n from both sides:

$10n-7n=7n+24-7n$

$3n=24$

Divide both sides by 3 :

$\frac{3n}{3} = \frac{24}{3}$

$n = 8$

hope this helps!