Mathematics, 13.01.2021 14:00, conner87

Anna has a total of 36 goldfish in her aquarium, some are orange and some are black. The number of orange goldfish is 7 more than twice the number of black goldfish. Which system of equations below can be used to describe the number of black and orange goldfish in Anna's aquarium?

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Anna has a total of 36 goldfish in her aquarium, some are orange and some are black. The number of o...