1. 18 + 24 = 6 * (3 + ?) 2. 10 + 2 = ? (5 + 1) 3. 3 x (7 + ?) = 21+ 6 4. ? x (3 + 2) = 12 + 8 5. 30 + 28 = 2 * (15 + ?) Please give me the numbers for the question marks​