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Zanzabum
2 years ago
9

Sam is 5 years old. his older brother, tom, is three times as old as sam. when sam is 20, how old will tom be? 15

Mathematics
1 answer:
daser333 [38]2 years ago
3 0

5 + 3x = 20 \\ 3x = 20 - 5 \\ x = 15 \div 3 \\ x = 5
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