Nancy is 10 years less than 3 times her daughters age. If Nancy is 41 years old, how old is her daughter?
Declare variables for each age:
Solve for d in the equation 3d - 10 = 41
Step 1: Group constants:
We need to group our constants -10 and 41. To do that, we add 10 to both sides
3d - 10 + 10 = 41 + 10
Step 2: Cancel 10 on the left side:
3d = 51
Step 3: Divide each side of the equation by 3
3d/3 = 51/3
d = 17
Declare variables for each age:
- Let Nancy's age be n
- Let her daughter's age be d
- n = 3d - 10
- n = 41
Solve for d in the equation 3d - 10 = 41
Step 1: Group constants:
We need to group our constants -10 and 41. To do that, we add 10 to both sides
3d - 10 + 10 = 41 + 10
Step 2: Cancel 10 on the left side:
3d = 51
Step 3: Divide each side of the equation by 3
3d/3 = 51/3
d = 17