Mathematics, 18.09.2019 02:00 Alohanikolas

Joan likes to watch the birds in her yard. one morning, she notices that there are twice as many robins as blue jays. if she counted 21 blue jays and robins in all, how many blue jays did she count. need badly

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Joan likes to watch the birds in her yard. one morning, she notices that there are twice as many rob...