Formulating the equation for an age problem
Short answerMarc is 5 years younger than his sister. The sum of their ages is 21 years. Let x represent the sister’s age; write the equation that expresses this problem (without solving it).
Marc is 5 years younger than his sister. The sum of their ages is 21 years. Let x represent the sister’s age; write the equation that expresses this problem (without solving it).