Respuesta :
9. r= 13 and 3, because the answer would be positive either way, 13-8=5,
3-8= | -5 | , | -5 | = 5 , you do the same thing for every other equation
10. c= 2, -10
11. No solution
12. w= 2, -2
13. t > 7/3 , -3 > t
3-8= | -5 | , | -5 | = 5 , you do the same thing for every other equation
10. c= 2, -10
11. No solution
12. w= 2, -2
13. t > 7/3 , -3 > t