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March 2, 2015

March 2, 2015

Posted by **bob** on Sunday, March 28, 2010 at 11:56am.

These are fractions, so bear with me:

-5/8 x= -9/10

Solve with the multiplicaation principle. How do I do this? The fractions throw me off every time!!!

- math -
**Reiny**, Sunday, March 28, 2010 at 12:39pmI interpret "multiplicaation principle" to mean multiply both sides by the same multiplier,

I will choose -8/5 (do you see why?)

(-8/5)(-5/8)x = (-8/5)(-9/10)

x = 72/50

I just cross-multiply to get

-50x = -72

x = 72/50

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