document.write( "Question 224772: The sum of three number is 75. The second is 5 more than the first, and the third is three times the second. what are the three number?
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Algebra.Com's Answer #167906 by checkley77(12844) ![]() You can put this solution on YOUR website! x+y+z=75 \n" ); document.write( "y=x+5 \n" ); document.write( "z=3y \n" ); document.write( "x+(x+5)+3(x+5)=75 \n" ); document.write( "x+x+5+3x+15=75 \n" ); document.write( "5x=75-15-5 \n" ); document.write( "5x=55 \n" ); document.write( "x=55/5 \n" ); document.write( "x=11 ans. \n" ); document.write( "y=11+5=16 ans. \n" ); document.write( "z=3*16 \n" ); document.write( "z=48 ans. \n" ); document.write( "Proof: \n" ); document.write( "11+16+48=75 \n" ); document.write( "75=75 \n" ); document.write( " \n" ); document.write( " |