document.write( "Question 135783: three times a number increades 5 times another number is 49 but twice the second number exceeds 5 times the first number by 1.what are the numbers? \n" ); document.write( "
Algebra.Com's Answer #99564 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Let x = \"a number\" \n" ); document.write( "Let y = \"another number\" \n" ); document.write( ": \n" ); document.write( "Write an equation for each statement: \n" ); document.write( ": \n" ); document.write( "\"three times a number increased 5 times another number is 49\" \n" ); document.write( "3x + 5y = 49 \n" ); document.write( ": \n" ); document.write( "\"twice the second number exceeds 5 times the first number by 1.\" \n" ); document.write( "2y = 5x + 1 \n" ); document.write( "In standard form \n" ); document.write( "-5x + 2y = 1 \n" ); document.write( ": \n" ); document.write( "what are the numbers? \n" ); document.write( ": \n" ); document.write( "Multiply the 1st equation by 5, and the 2nd equation by 3 \n" ); document.write( " 15x + 25y = 245 \n" ); document.write( "-15x + 6y = 3 \n" ); document.write( "-----------------Adding eliminates, x; find y: \n" ); document.write( " 0x + 31y = 248 \n" ); document.write( ": \n" ); document.write( "y = \n" ); document.write( "y = 8 \n" ); document.write( ": \n" ); document.write( "Find x using the 1st equation \n" ); document.write( "3x + 5(8) = 49 \n" ); document.write( "3x = 49 - 40 \n" ); document.write( "x = \n" ); document.write( "x = 3 \n" ); document.write( ": \n" ); document.write( "Check solutions in the 2nd equation: \n" ); document.write( "2(8) = 5(3) + 1 \n" ); document.write( "16 = 15 + 1; confirms our solution \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Did this make sense to you? Any questions?\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |