Află numărul necunoscut: 10 (42: 7+3 x 0) × 8-6]:6=a: 7 100-[403 × (7:7 +1×9)] × 6 =b× 5 [25+ (100 - 2 x 4 x 10): 4]: (27-3x 8) = c + c 35 d 19 - (7+3 × 6): 5] × [3+ (12 36: 9): 4] 6+e=3+ [(3 x 8 6-6 × 0) + (30-45 9) 5] × 3 x 10 10 10)-(7 × 7+ 50: 5)] : 10 1-2-5-[(10 r: [1+30: (8 × 4-3 × 9)] = 7 y-[72: (20- 2 x 6) +15] = 68 zx[18-4 x (54: 6-48 : 8)] = 60 g+[40- (3 × 11 90 10+ 0 × 5) : 4] = 82 -​