document.write( "Question 89985: If 5 times the first number plus three times the second number eaguals 47, and 10 times the first number minus 4 times the second number equals 54, what are the numbers? \n" ); document.write( "
Algebra.Com's Answer #65357 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! 5X+3Y=47 \n" ); document.write( "10X-4Y=54 NOW MULTIPLY THE FIRST EQUATION BY -2 & ADD: \n" ); document.write( "-10X-6Y=-94 \n" ); document.write( "-------------------------- \n" ); document.write( "-10Y=-40 \n" ); document.write( "Y=-40/-10 \n" ); document.write( "Y=4 ANSWER \n" ); document.write( "5X+3*4=47 \n" ); document.write( "5X+12=47 \n" ); document.write( "5X=47-12 \n" ); document.write( "5X=35 \n" ); document.write( "X=35/5 \n" ); document.write( "X=7 ANSWER. \n" ); document.write( "PTOOF \n" ); document.write( "10*7-4*4=54 \n" ); document.write( "70-16=54 \n" ); document.write( "54=54 \n" ); document.write( " |