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10. Calculează. a) [(72 x 3-80): 2 + 2x 124]: 4 = b) 400 + 480: 4-[640 : 2+ 4 x (20 + 12 + 18)] = c) [1 + 2 x (6+6:3) - 5]: 6 = d) 180:2+ [(50 x 2 : 10+90) + 10] - 25 x 4 = 019+(837:3+528:4)] x 2 = e) [1 f) [(136 x 4 + 56 x 6) x 5-2 552]: (900 - 3 x 293) = g) 900-[(648:4 + 350: 5) : 2] x 3 = h) 95-[25: (459)+ (36:9 x 3-6)] + 786 : 6 = i) [84 +(630:6 x 4)-(312: 8 x 2)-298]: (8 x 864 : 108) = j) 314-2x [(16+ +15) - (83-79)] = k) 9 x (101 x 1+111: 1)-[85-7x (36:9 +63 :9)] = I) 324 [108: (21+54: 9 x 5:30 + 45: 9)] + 19 = m) 101 -300 [24-21 (42-18:3-180: 12) + 196: 28] =​