Calculează: a) (17 x 9+ 24x8-891:27): 3 = b) (528:24 + 420 : 3 + 11 x 17) × 15 = c) 5 x 47+ 12 x 95 - 725 : 25 = d) (247 +743): 45+ 4x (276-197) = e) 9x (17 x 4 +27) - (105 +75 +65): 5 = [1 500+ 27x (639: 9) - (536: 8)]: 10 = 19) [(63+ 19 x 24): 3+ 464: 4-11 x 11] × 25 = h) 160-4x [15+5x (265-4 x 65)] = i) (243 x 15:27 + 26 664: 24): (900: 36-23) = j) [(1 473-589 +2 907-3 247): 32 + (61 x 35-55 x 35)] × 100 = k) [(311 + 114-100): 5+ (70 + 84 × 5:4)] - 230 = 1) 2 099 +1-(109 +1-672: 7)x4 +6:6= m) [187 (366:6+3): 8] x 3-500+ 625: 5 = n) 113 x 4+ [136 x 75 - (324: 4:9x3+45) + 246 - 123: 3] = Xo) [142 x 5-(1 122: 11-707: 7) x 125]: 15:3= p) [(812-8 750: 25): 22] x 103-1 094 = q) (126 x 32 + 89 x 63): [105 324-89 113 - (230 x 68 +7 x 70)] r) [(964 x 12 + 36 x 12): 100 + 72 x 6]: 24 - (12 696: 24 - 2 x 253) = s) [(6 027: 21-1 480: 40): 25 x (48 x 45: 15)]: 24 = t) [6 x 10 x 100 - (25 x 4-40) x 5] - (10 x 10 x 7 + 120 : 3 × 35) = u) [12 x 44+ (750 + 450: 6+ 27:9): 6]: 2+4= v) [12 x 33+ 4x (950-250 x 3 + 4)]: 3+ 47 x 13 = x​