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1. x / 3 - 6 = 10 x - 18 = 30 x = 30 + 18 x = 48 2. X / 4 - 5 = 6 x - 20 = 24 x = 24 + 20 x = 44 3. N + (n + 1) + (n + 2) = 93 n + n + 1 + n + 2 = 93 3n + 3 = 93 3n = 93 - 3 3n = 90 n = 90 / 3 n = 30 4. X / 3 + x / 4 = 84 4x + 3x = 1008 7x = 1008 x = 1008 / 7 x = 144 5.

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Unicornio120
3

1. x / 3 - 6 = 10

x - 18 = 30

x = 30 + 18

x = 48

2.

X / 4 - 5 = 6

x - 20 = 24

x = 24 + 20

x = 44

3.

N + (n + 1) + (n + 2) = 93

n + n + 1 + n + 2 = 93

3n + 3 = 93

3n = 93 - 3

3n = 90

n = 90 / 3

n = 30

4.

X / 3 + x / 4 = 84

4x + 3x = 1008

7x = 1008

x = 1008 / 7

x = 144

5.

X / 2 + x / 3 = 90

3x + 2x = 540

5x = 540

x = 540 / 5

x = 108

6.

X + 2 / 5 = 1400

x + 2 = 7000

x = 7000 - 2

x = 6998

7.

X + 2 / 3 = 180

x + 2 = 540

x = 540 - 2

x = 538

8.

3x + 20 = 5x - 10

3x - 5x = - 10 - 20 - 2x = - 30

x = 30 / 2

x = 15

9.

4x - 7 = 3x + 3

4x - 3x = 3 + 7

x = 10

10.

X / 3 - 7 = 10

x - 21 = 30

x = 30 + 21

x = 51

11.

2x = y

x + 50 = y - 50

x = y / 2

x + 50 = y - 50

y / 2 + 50 = y - 50

y + 100 = 2y - 100

y - 2y = - 100 - 100 - y = - 200

y = 200

x + 50 = 200 - 50

x = 100

carlos tiene 200

raul tiene 1000

12.

X / 3 + x / 4 = 77

4x + 3x = 924

7x = 924

x = 924 / 7

x = 132

13.

X + 2 / 3 = 144

x + 2 = 432

x = 432 - 2

x = 430.