So the correct ratio is 4:5
The only one that doesn’t mean the same as that is C.
6 positive tiles because there’s 6 negative so 6 positive will cancel it out
14-5+20÷2∧2+4
exponent first: 14-5+20÷4+4
Divide: 14-5+5+4
Solve left to right: 9+5+4
add all: 14+4 = 18