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March 30, 2015

March 30, 2015

Posted by **david** on Thursday, November 1, 2007 at 4:26pm.

I tried to cross-mulitplied and I got 3x+35=8. I divided -27 by 3 and I got -9. Is this right?

- math -
**tchrwill**, Thursday, November 1, 2007 at 4:34pm3/7x+5=8.

I tried to cross-mulitplied and I got 3x+35=8. I divided -27 by 3 and I got -9. Is this right?

Not quite.

Given 3/7x + 5 = 8

Multiply through by 7x yields

3 + 35x = 56x

3 = 21x making x = 1/7.

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