document.write( "Question 949259: eight times a number plus five time another number is -13. The sum of the two numbers is 1. What are the numbers \n" ); document.write( "
Algebra.Com's Answer #579464 by macston(5194)![]() ![]() You can put this solution on YOUR website! F=first number; S=second number \n" ); document.write( "F+S=1 Subtract S from each side. \n" ); document.write( "F=1-S \n" ); document.write( "8F+5S=-13 Substitute for F. \n" ); document.write( "8(1-S)+5S=-13 \n" ); document.write( "8-8S+5S=-13 Subtract 8 from each side \n" ); document.write( "-3S=-21 Divide each side by -3 \n" ); document.write( "S=7 ANSWER 1: The second number is 7 \n" ); document.write( "F=1-S=1-7=-6 ANSWER 2: The first number is -6. \n" ); document.write( "CHECK \n" ); document.write( "8F+5S=-13 \n" ); document.write( "8(-6)+5(7)=-13 \n" ); document.write( "-48+35=-13 \n" ); document.write( "-13=-13 \n" ); document.write( " |