SOLUTION: the greatest of three numbers equals the product of -7 and the smallest number, and the remaining number is 18 more than the smallest. find three numbers if the greatest is 3 less

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Question 449874: the greatest of three numbers equals the product of -7 and the smallest number, and the remaining number is 18 more than the smallest. find three numbers if the greatest is 3 less than twice the sum of the other two numbers
Answer by rwm(914) About Me  (Show Source):
You can put this solution on YOUR website!
x=2*(y+z)-3
y=18+z
x=-7*z
x = 21, y = 15, z = -3
check
21=2*(12)-3
21=21
ok
15=18-3
ok
21=-7*-3
ok