374-3/4-1/4*5

374-3/4-1/4*5 3 1/4 1/5 4/7 (1)(1+2/3+3/4+4/5+5/6)*(1+3/4+4/5)-(1+3/4+4/5)*(2/3+3/4+4/5+ {3/4+4/5+5/6}+{1+2/3+3/4+4/5}-{1+2/3+3/4+4/5+5/6}×{2/3+3/4+4 (（1^4+1/4)(3^4+1/4)(5^4+1/4).(19^4+1/4))/((2^4+1/4)(4^4+1/4) 374/(12/3*5)=?(四舍五入到十分位) 4^2÷(-1/4)-5^4÷(-5)^3, 求[(1^4+1/4)(3^4+1/4)(5^4+1/4)……(19^4+1/4)]/[(2^4+1/4)(4^4+1/ 1 2 3 4 5 .1,2,3,4,5, 5/9÷[4/5÷（3/5-1/4)] 3/4*1/5+3/4*2/5+0.75*3/5-3/4简便运算