An equation is shown below:
3(4x − 2) = 1
which of the following correctly shows the first two steps to solve this equation?
step 1: 12x − 2 = 1; step 2: 12x = 3
step 1: 12x − 6 = 1; step 2: 12x = 7
step 1: 7x + 1 = 1; step 2: 7x = 0
step 1: 7x − 5 = 1; step 2: 7x = 6

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.