Question

Johnny is 21 years old he is three times as old as Becky write and solve an equation to determine Becky's age.

Answer 1

Answer:

Becky is 7 years old.

Step-by-step explanation:

Let b - Becky's age

Equation - 3b = 21

Divide both size by 3 to isolate the variable.

21/3 is 7.

Answer 2

Answer:

The answer is 7

Step-by-step explanation:

if Johnny is 21 and he is three times as old as Becky

3*7= 21