22018461 22018461

16-03-2021
Mathematics

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Solve 7x – 9 = 28 + 4(x – 1).

Respuesta :

16-03-2021

7x - 9 = 28 + 4x - 4
7x - 4x = 28 - 4 + 9
3x = 33
x = 11

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