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a) [(12+37) x 6-(34 +47) x 2] + 21+2= b) 606 +486:9 x 3 - [432: 6+ (2596 - 2499) - 9] - 606 = c) [735: 3-(186 + 458 : 2- 60 x 6)] + (129 x 7:3-147) = d) 900 - [(648:4 + 350: 5): 2] × 3 =​

A 1237 X 634 47 X 2 212 B 606 4869 X 3 432 6 2596 2499 9 606 C 735 3186 458 2 60 X 6 129 X 73147 D 900 6484 350 5 2 3 class=