Question

how to solve x over 9 minus 1 equals negative 10

Answer 1

Solve for x:
x/9-1 = -10
Put the fractions in x/9-1 over a common denominator.
Put each term in x/9-1 over the common denominator 9: x/9-1 = x/9-(9)/9:
x/9-(9)/9 = -10
Combine x/9-(9)/9 into a single fraction.
x/9-(9)/9 = (x-9)/9:
(x-9)/9 = -10
Multiply both sides by a constant to simplify the equation.
Multiply both sides of (x-9)/9 = -10 by 9:
(9 (x-9))/9 = -10×9
Cancel common terms in the numerator and denominator of (9 (x-9))/9.
(9 (x-9))/9 = 9/9×(x-9) = x-9:
x-9 = -10×9
Multiply 9 and -10 together.
9 (-10) = -90:
x-9 = -90
Isolate terms with x to the left hand side.
Add 9 to both sides:
x+(9-9) = 9-90
Look for two terms that sum to zero.
9-9 = 0:
x = 9-90
Evaluate 9-90.
9-90 = -81:
Answer: |
| x = -81