document.write( "Question 509631: Mary's sister is 7 years older than Mary. Their combined ages add up to 35. How old is Mary? I need to show the equation. I keep coming up with m+7=35 but I know this isn't right. Can you help me? \n" ); document.write( "
Algebra.Com's Answer #341534 by scott8148(6628)\"\" \"About 
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Mary is m, her sister is m+7 ___ together they are 35\r
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\n" ); document.write( "\n" ); document.write( "m + m + 7 = 35 ___ 2m = 28
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