document.write( "Question 613476: the sum of three consecutive multiples of 5 is 90. find the numbers.
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Algebra.Com's Answer #386111 by Charles1947(18)![]() ![]() ![]() You can put this solution on YOUR website! the sum of three consecutive multiples of 5 is 90. find the numbers. \r \n" ); document.write( "\n" ); document.write( "Let the first number be x.\r \n" ); document.write( "\n" ); document.write( "The next number is x+5.\r \n" ); document.write( "\n" ); document.write( "The next number is x+10.\r \n" ); document.write( "\n" ); document.write( "x+(x+5)+(x+10)=90\r \n" ); document.write( "\n" ); document.write( "x+x+5+x+10=90\r \n" ); document.write( "\n" ); document.write( "combine terms\r \n" ); document.write( "\n" ); document.write( "3x+15+90\r \n" ); document.write( "\n" ); document.write( "Subtract 15 from both sides of the equation.\r \n" ); document.write( "\n" ); document.write( "3x=75\r \n" ); document.write( "\n" ); document.write( "Divide both sides of the equation by 3\r \n" ); document.write( "\n" ); document.write( "x=25, x+5=30, x+10=35\r \n" ); document.write( "\n" ); document.write( "Check 25+30+35=90 \n" ); document.write( " |