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139又137/138+137×1又1/138 怎么算,

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139又137/138+137×1又1/138 怎么算,
以及下面要简便运算哦!不要扔砖嘛!会给赏赐滴………………
(9又2/7+7又2/9)÷(5/7+5/9)
1098÷1998又1998/1999
362+548*361 分之362*548-186
41又1/3×3/4+51又1/4×4/5+61又1/5×5/6
382+498*381 分之 382*498-116
84又4/19*1.375+105又5/19*0.9
6.8*8/25+0.32*4.2-8/25
(96又63/73+36又24/25)/(32又21/73+12又8/25)
打死我了………………加油吧、。
139又137/138+137×1又1/138 怎么算,
您好:

139又137/138+137×1又1/138
=140-1/138+137x1+137x1/138
=140-1/138+137+137/138
=277又68/69


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再问: 我还有几道题。。。也帮帮吧……
再答: (9又2/7+7又2/9)÷(5/7+5/9) =(65/7+65/9)÷(5/7+5/9) =13x(5/7+5/9))÷(5/7+5/9) =113 1998÷1998又1998/1999 =1998÷【1998x(1+1/1999)】 =1÷(1+1/1999) =1999/200 362+548*361 分之362*548-186 =(361x548+548-186)/(362+548x361) =(362+548x361)/(548x361+362) =1 41又1/3×3/4+51又1/4×4/5+61又1/5×5/6 =40x3/4+4/3x3/4+50x4/5+5/4x4/5+60x5/6+6/5x5/6 =30+1+40+1+50+1 =123 382+498*381 分之 382*498-116 =(381x498+498-116)/(382+498x381) =(381x498+382)/(382+498x381) =1 84又4/19*1.375+105又5/19*0.9 =84又4/19x11/8+105又5/19x9/10 =80x11/8+80/19x11/8+100x9/10+100/19x9/10 =110+110/19+90+90/19 =200+200/19 =210又10/19 3又1/10+3又11/100+3又111/1000+3又1111/10000 =3.1+3.11+3.111+3.1111 =12.4321 6.8*8/25+0.32*4.2-8/25 =6.8x0.32+0.32x4.2-0.32 =0.32x(6.8+4.2-1) =0.32x10 =3.2 (96又63/73+36又24/25)/(32又21/73+12又8/25) =3x(32又21/73+12又8/25)/(32又21/73+12又8/25) =3