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Old 07-22-2007   #1
Heiken
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Default [Math] Integer word problem?

I'm currently stuck on a set of problems that the book doesn't have examples for, e.g:"Nine times the first of two consecutive odd integers equals seven times the second. Find the integers."
 
Old 12-29-2007   #2
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Default here's how

"Nine times the first of two consecutive odd integers equals seven times the second. Find the integers."

Express two consecutive odd integers as x and x+2
then the problem states...
9(x) = 7(x+2)
9x = 7x + 14
subtract 7x from both sides
9x - 7x = 7x + 14 - 7x
2x = 14
x = 7
so, the answers are 7 and 9

CHECK by substituting your answer back into the original equation

9(7) = 7(9)
63 = 63 check!
 
Old 12-29-2007   #3
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Excellent explanaion. Thanks.
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Old 12-31-2007   #4
galal95
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-9+9=
0
because the negtive 9 and the postive 9cancels out so its 0
 
Old 12-31-2007   #5
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Hi

HI! How is your vecation is going. Firast let me ask u something what is 5+5+6+-9-|-9|=
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Old 12-31-2007   #6
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Hi

HI! what is 5+5+6+-9-|-9|=
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Old 01-01-2008   #7
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hwllo humza 95 what is 100* 100+1000
 
 

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