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March 30, 2015

Posted by **Layla** on Thursday, December 9, 2010 at 9:32pm.

- Math -
**PsyDAG**, Friday, December 10, 2010 at 10:19amLet x = boys and y = dogs

x + y = 40, then x = 40-y

2x + 4y = 100

Substitute 40-y for x in second equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the second equation.

- Math -
**Poop**, Tuesday, May 29, 2012 at 11:55pm10 dogs

30 kids

- Math -
**rffgfthtdcty**, Tuesday, November 20, 2012 at 10:33am2-4=2-=+y=y765

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