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If 6 men build a wall in 15 days, then how many days will 9 men take?
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What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove
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If 6 men build a wall in 15 days, then how many days will 9 men take?...
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