Răspuns:
12)
a÷b = 7 rest 6》 a= b×7+6
a+b = 110
a _ _ _ _ _ _ _ +6
b _ } 110
110 -6 = 104
104 ÷8 = 13 ( un segment)
b = 13
a= b×7+6
a = 13 ×7 +6
a= 91 +6
a= 97
a+b = 97 +13 = 110
a÷ b = 97 ÷13
97÷13= 7 rest 6
91
__
= 6
