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5x + 18 = 90
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Maggie080

by Maggie080 at December 07, 2010

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minus 18 to get 72 then divide by 5 to get x=72/5
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What_ok What_ok December 07, 2010

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5x+18=90 5x+18-18=90-18 5x=72 5/5x=72/5 x=14.4 or 14 and 2/5
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Redzone Redzone December 07, 2010

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Easy.
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Stoichiometry Stoichiometry December 08, 2010

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72/5 *whew*
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fabianscorpio fabianscorpio December 08, 2010

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x=14.4
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JOMJONE JOMJONE December 08, 2010

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5x=90-185x=72x=72/5x=14.4
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gibby. gibby. December 15, 2010

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so first subtract 18 from both sides and you get 5x=72 and then divide both sides by 5 to isolate x. and get 14.4
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GURUKID GURUKID December 18, 2010

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5x=90-185x=72x=72/5
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jesuswillhelp jesuswillhelp February 15, 2011

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