9 divided by 72 = 0.125
0.125 is the weight of one book
0.125 times 80 = 10kg.
So 80 books weight 10kg.
72 divided by 9 = 8 books make up 1 kg.
8 times 6 =48
Answer:
(-18) + (-2) = -20
Step-by-step explanation:
arrow is moving from -18 to -20.
Answer:
-11
Step-by-step explanation:
-9 +(-1) 2
-9 - 1 x 2
-9 - 2
-11
