Answer :
Answer 4(x+6)=112
4x+6=112 would only pay shipping for 1 book
4(x-6)=112 is taking away money
42-6=112 maybe this means 4x-6=112 but that would still be wrong
4x+6=112 would only pay shipping for 1 book
4(x-6)=112 is taking away money
42-6=112 maybe this means 4x-6=112 but that would still be wrong