Question

1. 416:8+{2x[378:9x(56:7x6)]}=
2.{1000-[6000:(10+45x2)x48+12]}:7=

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Answer 1

416:8+{2×[378:9×(56:7×5)]} =
52+{2×[42×(8×5)]} =
52+[2×(42×40)] =
52+(2×1680)=
52+3360
3412

{1000-[6000:(10+25×2)×48+12]} :7=
{1000-[6000:(10+50)×48+12]} :7=
[1000-(6000:60×48+12)] :7=
[1000-(100×48+12)] :7=
[1000-(4800+12)] :7=
(1000-4812):7=