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plsss!! e urgent!
a) 310-0x (100 - 30 x 3) = 280;
b) 64 - 120: 30 x 2:10) - 0 = 40:
c) 406 - 4x[0 x 30 - 20:5:4)] = 58;
d) 121 - (648:24+0): 7) x 3 +55=100;
e) [1 860 : 3+ (0 + 164):2+7]: 8 = 100​