12n=9(n+10)
12n = 9n + 90
12n - 9n = 9n - 9n + 90
3n = 90
n = ?
how do you solve this equation: 12n=9(n+10)
2 answers
12n=9(n+10)
remove parentheses
12n = 9n+90
Move unknown (n) to the same side by subtracting 9n from both sides.
12n-9n = 9n-9n+90
combine terms.
3n=90
divide both sides by 3.
3n/3 = 90/3
n=?
remove parentheses
12n = 9n+90
Move unknown (n) to the same side by subtracting 9n from both sides.
12n-9n = 9n-9n+90
combine terms.
3n=90
divide both sides by 3.
3n/3 = 90/3
n=?