Question

Tony is 3 years older than Marie. This can be modeled with the following equation: T = M + 3. Solve the equation for Marie's age, M.

a) M = T + 3
b) M = T - 3
c) M = 3T
d) M = T / 3

Answer 1

Tony is 3 years older than Marie. This can be modeled with the following equation: T = M + 3. Solve the equation for Marie's age, M is M = T - 3

Step-by-step explanation:

To solve the equation T = M + 3 for Marie’s age, M, we need to isolate M on one side of the equation. By subtracting 3 from both sides of the equation, we get M = T - 3. This means that Marie’s age is three years less than Tony’s age.

In the given equation T = M + 3, to solve for M, we need to isolate M on one side of the equation. By subtracting 3 from both sides of the equation, we get M = T - 3. This is because when we subtract 3 from T on one side, we also need to subtract 3 from the other side to maintain equality. Therefore, the correct answer is M = T - 3.

This solution shows that Marie’s age can be represented as three years less than Tony’s age, as indicated by the equation M = T - 3.