Question

resolva as seguintes equações

a)x+2x+4x+8x=75
b)x+3x=16,20

Answer 1

x+2x+4x+8x=75

15x=75

x=75/15

x=5

x+3x=16,20

4x=16,20

x=16,20/4

x=4,05

Answer 2

A)

x+2x+4x+8x= 75

15x= 75

  x= 75/15

  x= 5

Resposta → S= {5}

B)

x+3x= 16,20

4x= 16,20

 x= 16,20/4

 x= 4,05

Resposta → S= {4,05}