2/5*4+1/5*2/3+2/5*12/3能用简便方法解决吗
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![2/5*4+1/5*2/3+2/5*12/3能用简便方法解决吗](/uploads/image/z/10749884-68-4.jpg?t=2%2F5%2A4%2B1%2F5%2A2%2F3%2B2%2F5%2A12%2F3%E8%83%BD%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%A7%A3%E5%86%B3%E5%90%97)
2/5*4+1/5*2/3+2/5*12/3能用简便方法解决吗
2/5*4+1/5*2/3+2/5*12/3能用简便方法解决吗
2/5*4+1/5*2/3+2/5*12/3能用简便方法解决吗
2/5*4+1/5*2/3+2/5*12/3
=2/5*4+2/5*1/3+2/5*12/3
=2/5*(4+1/3+12/3)
=2/5*25/3
=10/3
5/1*2*3+5/2*3*4+5/3*4*5+.+5/11*12*13
2/5*4+1/5*2/3+2/5*12/3能用简便方法解决吗
3/4*5/12除以2/5
18-1.5÷3/5 (3/4+1/2)×2/5 12+3/4×2/3
1/4*(-5/3)+2/7*(-5/12)-5/12*5/7
1+2/3*5+3/5*8+4/8*12+5/12*17+1/17
1+2/3*5+3/5*8+4/8*12+5/12*17+1/17
0.25+12/1+(-3/2)-4/1-12/5
(1)12^13(3^10*4^11) (2) (5^4*3^3-5^3*3^2+5^2*3)/15
1-2 5/12-1 1/4-3 13/15+2 1/5+1 3/15
4、5、1、2、3、4、5
1*2*3+2*3*4+3*4*5+5*6*7+.10*11*12
1*2*3+2*3*4+3*4*5+5*6*7+.10*11*12
6又1/3÷5/12+2又2/5×4又2/3-240%
[(-5)^3*(-1/5)^2-5^2]-|1/4-0.375|
(5/12-5/16)*4/5+2/3
2/5*〔3/4-(7/12-1/4〕
1+1 2+2 3+3 4+4 5+5