1:(7 × (12 - 8)) - 42:7 × (12 - 8) - 43:7 × 4 - 12 + 84:(7 × 4) - 12 + 85:(7 × 4 - 12) + 86:((7 × 4) - 12) + 87:7 × 4 -(12 - 8)8:(7 × 4) - (12 - 8)9:7 × 4 + 8 - 1210:(7 ×...