n + 9n - 90 = 0
Solve for n in the equation n + 9n - 90 = 0
Step 1: Group the n terms on the left hand side:
(1 + 9)n = 10n
Step 2: Form modified equation
10n - 90 =
Step 3: Group constants:
We need to group our constants -90 and 0. To do that, we add 90 to both sides
10n - 90 + 90 = 0 + 90
Step 4: Cancel 90 on the left side:
10n = 90
Step 5: Divide each side of the equation by 10
10n/10 = 90/10
n = 9
Solve for n in the equation n + 9n - 90 = 0
Step 1: Group the n terms on the left hand side:
(1 + 9)n = 10n
Step 2: Form modified equation
10n - 90 =
Step 3: Group constants:
We need to group our constants -90 and 0. To do that, we add 90 to both sides
10n - 90 + 90 = 0 + 90
Step 4: Cancel 90 on the left side:
10n = 90
Step 5: Divide each side of the equation by 10
10n/10 = 90/10
n = 9