3. Simplify:
(a) (800 = 10) - {(128) = (34-1013
(b) 61 - {(35 + 34 = (45-23)}
(c) 4250 = 125 - 40B0D = 272 - 36 x 156
(d) (72 x 168) = 21 of 16
(e) (49 = 7) = 7 of 14
(f) (43) 9=2 of 8
(g) 720 + 6 x (200 - 116)
(h) 200 - 50 = 25 +98 = 4
4i) 122 - {(70 - 68) = (92 - 45)}
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