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Resolver y verificarA) 3?

Resolver y verificar A) 3. (x - 1) = 3 B)8. (x + 6) = 88 C)9. (x - 2) = 27 D)2. (x + 2) + 3. (x - 1) = 11.

7Nikole151

En resumen

A) 3. (x - 1) = 3 3x - 3 = 3 3x = 3 + 3 3x = 6 x = 6 / 3 x = 2 b) 8. (x + 6) = 88 8x + 48 = 88 8x = 88 - 48 8x = 40 x = 40 / 8 x = 5 c) 9. (x - 2) = 27 9x - 18 = 27 9x = 27 + 18 9x = 45 x = 45 / 9 x = 5 d) 2. (x + 2) + 3.

Mejor respuesta

Lourdes27

1

A) 3.

(x - 1) = 3

3x - 3 = 3

3x = 3 + 3

3x = 6

x = 6 / 3

x = 2

b) 8.

(x + 6) = 88

8x + 48 = 88

8x = 88 - 48

8x = 40

x = 40 / 8

x = 5

c) 9.

(x - 2) = 27

9x - 18 = 27

9x = 27 + 18

9x = 45

x = 45 / 9

x = 5

d) 2.

(x + 2) + 3.

(x - 1) = 11

2x + 4 + 3x - 3 = 11

2x + 3x = 11 + 3 - 4

5x = 14 - 4

5x = 10

x = 10 / 5

x = 2.