document.write( "Question 452619: A restaurant charges $7 for a regular meal and $5 for a child's meal. Both prices include tax. a family of 9 people spent $53 at the restaurant. How many regular meals and how many children's meals did they pay? \n" ); document.write( "
Algebra.Com's Answer #311133 by Love math(28)![]() ![]() ![]() You can put this solution on YOUR website! let d for adut, c for a child \n" ); document.write( " 53 =7d+5c \n" ); document.write( " 9 = d+c \n" ); document.write( " 9-d = c \n" ); document.write( "sutitution c=9-d \n" ); document.write( "53 =7d+5(9-d) \n" ); document.write( "53 =7d+45-5d \n" ); document.write( "53 = 2d +45 \n" ); document.write( "53-45 =2d \n" ); document.write( " 8= 2d \n" ); document.write( " 8/2=d \n" ); document.write( " 4 = d \n" ); document.write( "d+c =9 \n" ); document.write( "4+c=9 \n" ); document.write( " c =9-4 \n" ); document.write( " c =5 \n" ); document.write( " |