steven is 9 less than half ann's age. stevens age is 12 years old. what's anns age
S = A/2 - 9 ... 12 = A/2 - 9 ... 21 = A/2 ... A = ?
12 = .5A - 9
Add 9 to both sides, then multiply both sides by 2 to find Ann's age.
To solve this problem, we can break it down into steps:
Step 1: Let's set up an equation to represent the information given. Let A represent Ann's age. According to the problem, Steven's age is 9 less than half of Ann's age. So we can write the equation as follows:
Steven's age = (1/2) * Ann's age - 9
Step 2: We are given that Steven's age is 12 years old. Substituting this into the equation, we have:
12 = (1/2) * Ann's age - 9
Step 3: Now, let's solve the equation for Ann's age. First, let's add 9 to both sides of the equation to isolate the (1/2) * Ann's age:
12 + 9 = (1/2) * Ann's age
21 = (1/2) * Ann's age
Step 4: To solve for Ann's age, we multiply both sides of the equation by 2:
2 * 21 = 2 * (1/2) * Ann's age
42 = Ann's age
Therefore, Ann is 42 years old.