Respuesta :

I = 22
J = 53
K = 105

(x+7) + (3x+8) + 7x = 180

Combine like terms:

11x + 15 = 180

11x = 165

X = 15

sub 15 for x in original equations

I = x + 7 = 15 + 7 = 22
J = 3x + 8 = 3(15) + 8 = 45 + 8 = 53
K = 7x = 7(15) = 105