70+2×{72÷8+3×[30+3×(500÷4-49×2)]}=754
70+2×{9+3×[30+3×(125-98)]}=754
70+2×[9+3×(30+3×27)]=754
70+2×[9+3×(30+81)]=754
70+2×(9+3×111)=754
70+2×(9+333)=754
70+2×342=754
70+684=754
2014-{2012-[2012-(2013-2012)]}=2013
2014-[2012-(2012-1)]=2013
2014-(2012-2011)=2013
2014-1=2013
