Question

ayudaaa doy corona y 5 puntos

resolver las siguientes ecuaciones.

a) 2x + 3 = 9 c) x + 4x = 7 + 13

b) 3x - 5 = 10 d) 2 + 7x - 3x = 18

c) x + 4x = 7 + 13

d) 2 + 7x - 3x = 18

e) 9 + 5x - 4 + x = 23

f) 10x - 5 - 2x = 9 + 5x + 7
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Answer 1

Respuesta:

a)2x +3= 9

2x=9-3

2x = 6

x= 6/2

x=3

b)3x - 5 = 10

3x = 10 + 5

3x = 15

x= 15/3

x= 5

c) x + 4 = 7 + 13

x + 4 = 20

x = 20 - 4

x = 16

d) 2 + 7x -3x = 18

7x - 3x = 18 - 2

4x = 16

x= 16/ 4

x = 4

e) 9 + 5x - 4 + x = 23

5x + x = 23 -9 +4

6x = 18

x = 18/ 6

x = 3

f) 10 x - 5 - 2x = 9 + 5 x + 7

10x -2x - 5x = 9 + 7 + 5

3x = 21

x = 21/3

x = 7