Annie tried to solve an equation step by step. 7.5 + k = 10 7.5 + k − 7.5 = 10 − 7.5 Step 1 k = 2.5 Step 2 7.5+k 7.5+k−7.5 k =10 =10−7.5 =2.5 Step 1 Step 2 Find Annie's mistake.

Step-by-step explanation:

Annie's mistake is in the second step.

He introduced "k7.5" & "-7.5k" which made him confuse and led him to delete "k", thereby omitting the variable being sort after

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3