To solve the given addition problems, let's add the numbers together: 7) 3 + 4 + 53 + 4 + 5 = 12 8) 5 + 6 + 25 + 6 + 2 = 13 9) 8 + 7 + 3 8 + 7 + 3 = 0 Therefore, the solutions to the addition problems are:7) 3 + 4 + 5 = 128) 5 + 6 + 2 = 139)8 + 7 + 3 = 18
Answer:7) 3+4+5= 128) 5+6+2= 139) 8+7+3= 18