Given the system 4x + 2y - 2z = 10 (A) 2x + 8y + 4z = 32 (B) 30x + 12y - 4z = 24 (C) If pairing A and B and B and C, the easiest variable to eliminate would be Blank 1 Question 4 . Step 1 Combine A and B Step 2 Combine B and C 2x + 8y + 4z = 32 (B) 30x + 12y - 4z = 24 (C) Blank 2 Question 4 x + Blank 3 Question 4 y + Blank 4 Question 4 z = 56