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OpenStudy (anonymous):
A first grade class has 6-year olds and 7-year olds. There are 13 children in the class, and the total of their ages is 83. Which system of linear equations represents the problem? http://go.flvs.net/courses/1/flvs_79_3600_cffc0c151398115/ppg/educator_math3/v8/04_pp_01_179.gif
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OpenStudy (anonymous):
a + b = 13 6a + 7b = 83
OpenStudy (king):
a=8,b=5
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