document.write( "Question 707091: one number is 7 less than the second number. twice the second number is 7 less than 5 times the first. find the smaller of the two. \n" ); document.write( "
Algebra.Com's Answer #435524 by josgarithmetic(39620)![]() ![]() ![]() You can put this solution on YOUR website! a is first number; b is second number.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "one number is 7 less than the second number. \n" ); document.write( "twice the second number is 7 less than 5 times the first. \n" ); document.write( "find the smaller of the two.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Those two equations turn into system: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Multiply first equation by 2 and subtract from the second equation. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5a-2b-(2a-2b)=7-(-14) \n" ); document.write( "3a+0=+7 \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Use a to find b. Using original first equation, a=-7+b, b=a+7, \n" ); document.write( "b=7/3+7= |