Question 729473
brittany is 5 years older than three times the age of her brother. The sum of their ages is 21. if x represents the age of her brother, write an equation that represents this situation
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Equations:
t = 3b + 5
t + b = 21
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Substitute for "t" and solve for "b":
3b+5+b = 21
4b = 16
Brother's age = 4 years
Brit's age = 3*4+5 = 17 years
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Cheers,
Stan H