Calculează. a. 45+7+[307-816: (9-5)]-8x18 c. 832:8+ [40+8x (100:5-72:4)] × 10 b. 406-4x (3 x (30-18:6:3)] d. 25+ 6x [107-100: (8-3)]-9×19 f. [55x5 (199-99 x 2 + 20 x 5) + 220:10]:4 e. 1+ 3x ( 3+8x (7-3)+ 3x ( 5+6 )] g.5+ [7 +3x (7-2)]: 2-6 i. [(36-36:2 x 0) + (6 x 7-4×9)]: 7 h. 9 +8x [7+6x (5+4x3)-2x1]-10 × 10 i. (9x8+13): [5 x 4 : (3+2 )+1] j. 6+3x [18 : 3-3x (12:3-3)] :9 k. 2+2x (2+2:2x (2+2 × 2)] 14+4x [44 +4 x (457-76 x 6)]: (44: 4-3) . (9x 99-99:9)-[(83-27:9) x 10+2 × 35] .634-[(206 x 4-618:3): 3] x 2 + 3x (10:2+630:9) b. [(3+ 3) x 3-3 + 3x (3+3:3)]: 3-3 x 3 +3:3x1+3:1 p. 9+8x [ 7+6x (5+4x3)-2 ]-10 x 10 r. (36:4+4x6+8:2+2): [(36:4+3 x 13) - 3 x 10-15] q. 401-603:3+ [330:3+2x (0:99+240)] : 9 s. 120-40:8 x [424 : 4-111 : 3+ (256 +46:2):3]:10 [(6+6x9-88:8)-(3x7+5-63:3)-4]:4 $. t. [86:2+3x (6+ 3)]: 7-(8-3) x (31-29) 8+3x [(3 x 13-4 x 12:6+2 x 11+2):5]= 12 x 16:4+12:4x (24:6 + 2 x 100: 100)]: (200:2:100)= [(0: 90 + 90:2) x (423:9 + 318: 6)]: (1 000: 100 × 10)= W. 49: 7+ [49+ (48:3+36:9 +7:7)]: 10- x 90+ [(45-34) x (56:8-7)]:10 + 3x (56-8×6)= (0+124-124:4): [88:4+2x (44:4 + 22:2)-63]=​