document.write( "Question 66336This question is from textbook An Incremental Development
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document.write( ": PLease help to solve\r
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document.write( "3/5x - 1/4y = 7\r
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document.write( "0.08x + 0.05y = 1.6 \n" );
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Algebra.Com's Answer #47049 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! 3X/5-Y/4=7 \n" ); document.write( ".6X-.25Y=7 \n" ); document.write( ".08X+.05Y=1.6 MULTIPLY THIS EQUATION BY 5 & ADD \n" ); document.write( ".4X+.25Y=8 \n" ); document.write( ".6X-.25Y=7 \n" ); document.write( "--------------- \n" ); document.write( "X=15 SOLUTION NOW SUBSTITUTE 15 FOR X & SOLVE FOR Y \n" ); document.write( ".6*15-.25Y=7 \n" ); document.write( "9-.25Y=7 \n" ); document.write( "-.25Y=7-9 \n" ); document.write( "-.25Y=-2 \n" ); document.write( "Y=-2/-.25 \n" ); document.write( "Y=8 SOLUTION \n" ); document.write( "PROOF \n" ); document.write( ".08*15+.05*8=1.6 \n" ); document.write( "1.2+.4=1.6 \n" ); document.write( "1.6=1.6 \n" ); document.write( " \n" ); document.write( " |