Ketchup7166 Ketchup7166

01-05-2018
Mathematics

contestada

there are a total of 122 countries in Africa, Europe, and North America. Europe has twice as many countries as North America, and Africa has seven more than Europe. How many countries are in each continent? write an equation and solve it to answer the question

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blacksothina blacksothina

01-05-2018

E = 2N

A = E + 7 = 2n + 7

n + 2n + 2n +7 = 122

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