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)\"\" \"About 
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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( "
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