Question

The second of three numbers is 3 times the first number. The third number is 5 more than the second number. If the second number is decreased by twice the third the result is 5 find the three numbers.

Answer 1

b=3a

c=b+5

b-2c=5

b-2(b+5)=5

b-2b-10=5

-b=15

b=-15

c=-15+5

c=-10

-15=3a

a=-5

The numbers are -5, -15, and -10

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