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(5x + 1 / 7 - 2)4 = 4 (5x + 1 - 14 / 7)4 = 4 (5x - 13 / 7) = 4 / 4 5x - 13 / 7 = 1 5x - 13 / 7 - 1 = 0 5x - 13 - 7 / 7 5x - 20 / 7 = 0 5x - 20 = 0 5x = 20 X = 20 / 5 X = 4.

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Vane375
6

(5x + 1 / 7 - 2)4 = 4

(5x + 1 - 14 / 7)4 = 4

(5x - 13 / 7) = 4 / 4

5x - 13 / 7 = 1

5x - 13 / 7 - 1 = 0

5x - 13 - 7 / 7

5x - 20 / 7 = 0

5x - 20 = 0

5x = 20

X = 20 / 5

X = 4.