Question

ובת תום

Kristine is twice her brother's age plus 2 years. 4 years ago, the sum of their ages was 21

use the information to write an equation to determine kristine's brother's age​

Answer 1

2x-2=21

Explanation:

2x+2-4=2x-2. Age of Kristine 4 years ago. The sum of there ages =21

2x-2=21

Answer 2

2x+2-4=21-x

I reread the question and hopefully this is the correct answer.