document.write( "Question 561655: the sum of the digits of a 3-digit number is 14. the hundred's digit being four times the unit's digit. if 594 is subtracted from the number, the number will be reversed. \n" ); document.write( "
Algebra.Com's Answer #364462 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Let a = the 100's digit \n" ); document.write( "let b = the 10's \n" ); document.write( "let c = the units \n" ); document.write( "then \n" ); document.write( "100a + 10b + c = the number \n" ); document.write( ": \n" ); document.write( "write an equation for each statement: \n" ); document.write( ": \n" ); document.write( "\"the sum of the digits of a 3-digit number is 14.\" \n" ); document.write( "a + b + c = 14 \n" ); document.write( ": \n" ); document.write( "\"the hundred's digit being four times the unit's digit.\" \n" ); document.write( "a = 4c \n" ); document.write( ": \n" ); document.write( "\" if 594 is subtracted from the number, the number will be reversed.\" \n" ); document.write( "100a + 10b + c - 594 = 100c + 10b + a \n" ); document.write( "100a - a + 10b - 10b = 100c - c + 594 \n" ); document.write( "99a = 99c + 594 \n" ); document.write( "simplify, divide by 99 \n" ); document.write( "a = c + 6 \n" ); document.write( "replace a with 4c \n" ); document.write( "4c = c + 6 \n" ); document.write( "4c - c = 6 \n" ); document.write( "3c = 6 \n" ); document.write( "c = 2 is the units \n" ); document.write( "then \n" ); document.write( "a = 4(2) \n" ); document.write( "a = 8 is the 100's \n" ); document.write( ": \n" ); document.write( "then \n" ); document.write( " b = 14 - 2 - 8 \n" ); document.write( "b = 4 is 10s \n" ); document.write( ": \n" ); document.write( "842 is the number \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "See if that works in the statement: \n" ); document.write( "\"if 594 is subtracted from the number, the number will be reversed.\" \n" ); document.write( "842 - 594 = 248 \n" ); document.write( "248 = 248 \n" ); document.write( " |