brandon uses the steps below to solve the equation 15x +6 = 14x +5 using algebra tiles.
step1: add 14 negative x tiles to both sides
step2: add 5 negative unit tiles to both sides
step3: the solution is x = 1
which explains whether brandon is correct?

a) brandon is correct because he has the correct solution in step 3
b) brandon is correct because he forms zero pairs to isolate the variable by using the lowest coefficient each time
c) brandon is not correct because he should have performed step 2 before performing step 1
d) brandon is not correct because he should have added 6 negative unit tiles to isolate the variable in step 2