A bag contains yellow marbles and red marbles, 80 in total. The number of yellow marbles is 2 more than 5 times the number of red marbles. How many yellow marbles are there?
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Step-by-step explanation:
yellow marbles=5x+2
red marbles=x
total=80
5x+2+x=80
6x+2=80
6x=80-2
6x=78
x=78/6
x=13
yellow marbles=5x+2
5(13)+2
65+2
67
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