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X = 19 5. X = 27 9 (9)x = 27 (9) 9(9)x = 27 (9) 9 x = 243 6. 3x = 6 5(5)3x = 6 (5) 53x = 30 3 3 x = 10 7.

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Amarilychuin
8

X = 19

5.

X = 27 9 (9)x = 27 (9) 9(9)x = 27 (9)

9 x = 243

6.

3x = 6 5(5)3x = 6 (5)

53x = 30

3 3 x = 10

7.

X + 3 = x - 1 2 3 (6)x + 3 = (6)x - 1 ( 6 divide a ambos denominadores) 2 3 3 ( x + 3) = 2 (x - 1) 3x + 9 = 2x - 2 3x + 9 = 2x + - 2 3x - 2x = - 2 + - 9 x = - 2 + - 9 x = - 11

8.

X + 9 = 2 5(5)x + 9 = 2(5)

5 x + 9 = 10 x = 10 - 9 x = 1.