Brother age

One brother talks about his younger brother: "2 years ago, I was three times my brother's age. In 3 years, I will be twice as old as my brother." How old is each brother now?

Correct answer:

a =  17
b =  7

Step-by-step explanation:

a2=3 (b2) a+3=2 (b+3)  a3b=4 a2b=3  Row2Row1Row2 a3b=4 b=7  b=17=7 a=4+3b=4+3 7=17  a=17 b=7

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