document.write( "Question 172326: I need help to lear how to solve this kind of Expression:\r
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document.write( "If 8x +5=21 then 3x +4=\r
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document.write( "How to solve it and what are those expressions called
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document.write( "Thank you!
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document.write( "Adriana \n" );
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Algebra.Com's Answer #127275 by Mathtut(3670) ![]() You can put this solution on YOUR website! this is an equation and an expression....the expression is dependent upon the outcome of x in the equation.\r \n" ); document.write( "\n" ); document.write( "if 8x+5=21...then we must find x .... to what 3x+4 =........ \n" ); document.write( "so subtract 5 from both sides \n" ); document.write( ": \n" ); document.write( "8x=16..divide by 2 \n" ); document.write( ": \n" ); document.write( "x=2 \n" ); document.write( ": \n" ); document.write( "3(2)+4=10 \n" ); document.write( " |