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11-02-2021
Mathematics

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help mathhhhhhhhhhhhhhhhhhhhhhhhhhhh class=

Respuesta :

11-02-2021

Answer:

a + 20 = 7*12 (multiplied both sides by 12)

a + 20 = 84 (calculated 7*12)

a = 84 - 20 (subtracted 20 on both sides)

a = 64 (calculated 84-20)

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