Question

Resuelve las siguientes ecuaciones tomando en cuenta el ejemplo a.75 – X = 3X+8 b. 8 – X = 5X+7 c. 13 - X = 3x + 6 d.27 – X = 3X+1 e. 44 + X = 12x + 34 f. 57 – X = 8x+1 g. 3x – 5 = 7 h.5t – 13 = 12 i.4x + 7 = 13 j.5x+3 =39 k. 16 – x = 2x – 1 l. 25– x =2x – 2
A Y U D A

Answer 1

Explicación paso a paso:

a) 75 - x = 3x + 8

75 - x = 3x + 8

-3x-x = 8 - 75

-4x = -67

x = 67/4

b) 8 - x = 5x + 7

8 - x = 5x + 7

-5x - x = 7 - 8

-6x = -1

x = 1/6

c) 13 - x = 3x + 6

13 - x = 3x + 6

-3x - x = 6 - 13

-4x = -7

x = 7/4

d) 27 - x = 3x + 1

27 - x = 3x + 1

-3x - x = 1 - 27

-4x = -26

x = 26/4 "simplificar"

x = 13/2

e) 44 + x = 12x + 34

44 + x = 12x + 34

-12x + x = 34 - 44

-11x = -10

x = 10/11

f) 57 - x = 8x + 1

57 - x = 8x + 1

-8x - x = 1 - 57

-9x = -56

x = 56/9

g) 3x - 5 = 7

3x - 5 = 7

3x = 7 + 5

3x = 12

x = 12/3

x = 4

h) 5t - 13 = 12

5t - 13 = 12

5t = 12 + 13

5t = 25

t = 25/5

t = 5

i) 4x + 7 = 13

4x + 7 = 13

4x= 13 - 7

4x = 6

x = 6/4 "simplificar"

x = 3/2

j) 5x + 3 = 39

5x + 3 = 39

5x = 39 - 3

5x = 36

x = 36/5

k) 16 – x = 2x – 1

16 – x = 2x – 1

-2x - x = -1 - 16

-3x = -17

x = 17/3

l) 25– x =2x – 2

-2x - x = -2 - 25

-3x = -27

x = 27/3

x = 9