数学简算题,1/2*3+1/2*53*(2/15+1/12)-2/51/3+3-(1/4+1/12)3/4*5/7*4/3-1/2
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数学简算题,1/2*3+1/2*53*(2/15+1/12)-2/51/3+3-(1/4+1/12)3/4*5/7*4/3-1/2
数学简算题,
1/2*3+1/2*5
3*(2/15+1/12)-2/5
1/3+3-(1/4+1/12)
3/4*5/7*4/3-1/2
数学简算题,1/2*3+1/2*53*(2/15+1/12)-2/51/3+3-(1/4+1/12)3/4*5/7*4/3-1/2
1/2*3+1/2*5
=1/2*(3+5)
=1/2*8
=4
3*(2/15+1/12)-2/5
=3*2/15+3*1/12-2/5
=2/5+1/4-2/5
=2/5-2/5+1/4
=1/4
1/3+3-(1/4+1/12)
=1/3+3-(3/12+1/12)
=1/3+3-1/3
=1/3-1/3+3
=3
3/4*5/7*4/3-1/2
=3/4*4/3*5/7-1/2
=5/7-1/2
=10/14-7/14
=3/14
1/2*3+1/2*5 =1/2*(3+5)=4
3*(2/15+1/12)-2/5 =3*2/15+3*1/12-2/5=2/5-2/5+1/4=1/4
1/3+3-(1/4+1/12) =1/3+3-1/4-1/12=3-1/4+1/3-1/12=3-(1/4-1/3+1/12)=2/1/3
3/4*5/7*4/3-1/2=3/4*4/3*5/7-1/2=3/14
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1/2*3+1/2*5
=1/2×（3＋5）
=4
3*(2/15+1/12)-2/5
=3×2/15＋3×1/12－2/5
=1/4
1/3+3-(1/4+1/12)
=1/3+3-(3/12+1/12)
=1/3+3-1/3
=1/3-1/3+3
=3
3/4*5/7*4/3-1/2
=3/4×4/3×5/7-1/2
=5/7-1/2
=3/14