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28-11-2014
Mathematics

Answered

Nine fewer than half a number is five more than four times the number. Define a variable, write an equation, and solve to find the number.

Answer :

Аноним Аноним

28-11-2014

n = the number

0.5n - 9 = 4n + 5
(0.5n - 0.5n) - 9 = (4n - 0.5n) + 5
-9 = 3.5n + 5
(-9 - 5) = 3.5n + (5 - 5)
-14 = 3.5n
-14/3.5 = 3.5n/3.5
-4 = n

The number is -4.

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