Determine a razão das seguintes progressões aritimétricas?

anonymous

(1,7,13,19,...)

(-7,-5,-3,...)

(10,8,6,4,...)

eileen-thomas_6096f3758fe5e

R = a2 - a1 logo:

(7) -( 1) = 6

(-5) - ( - 7) = -5+7 = 2

(8) -( 10) = - 2

caraduradepau

1)13-7=6

2)-5-(-7)=-5+7=2

3)8-10=-2

jhunior-spoy

(1,7,13,19...)=6

(-7,-5,-3...)=2

(10,8,6,4,...)= -2