oliviahunter252 oliviahunter252

29-04-2021
Mathematics

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Given that r = 7x+7y find x when y = 2 and r = 8

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peculiarpenz peculiarpenz

29-04-2021

Answer:

x = -6/7

Step-by-step explanation:

We must substitute in the values and solve for x

[tex]r = 7x + 7y\\(8) = 7x + 7(2)\\8 = 7x + 14\\8 - 14 = 7x + 14 - 14\\-6 = 7x\\-6/7 = 7x/7\\x = -6/7[/tex]

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