3÷×+1-1÷2=2÷3×-13÷×+1-1=2÷3×-13÷+=2÷3×-13/×=2/3×-13/×=2-3×/3×9×=2×-3(×)^29×-2×=-3(×)^27×=-3(×)^2-3(×)^2=7×(×)^2=7×/3×=√7×/3
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