Question

Resolver: 3x=27 , 2x+2=16 , 2x+1+2x-1=20 , 2x+1=64

Answer 1

Respuesta:

1 = 9.     2 = 7.     3 =5.      4 = 31.5

Explicación paso a paso:

3x=27

x = 27/3 = 9

2x+2 = 16

2x = 16 - 2

2x = 14

x = 14/2

x = 7

2x+1+2x-1= 20

2x+2x = 20 - 1 + 1

4x = 20

x = 20/4

x = 5

2x+1=64

2x=64-1

2x=63

x=63/2

x = 31.5

Answer 2

Respuesta:

A) 3x= 27 Prueba

x= 27/3 3(9)= 27

x= 9 27= 27

B) 2x+2= 16 Prueba

2x= 16-2 2(7)+2= 16

2x= 14 14+2= 16

x= 14/2 16= 16

x= 7

C) 2x+1+2x-1= 20 Prueba

2x+2x= 20-1+1 2(5)+1+2(5)-1= 20

4x= 20 10+1+10-1= 20

x= 20/4 20= 20

x= 5

D) 2x+1= 64 Prueba

2x= 64-1 2(31.5)+1= 64

2x= 63 63+1= 64

x= 63/2 64= 64

x= 31.5