(377)
(378)
(379)
(380)
(381)
Ainy晴
Ainy晴
10.7x?10.03(0.17?0.2x)?1; 1?0.5x0.2x?10.3x0.3?0.3?0.02; 0.1x?0.41.2?1?0.2x?10.3; 0.1x?0.020.1x?0.10.002?0.05?0.3,
x?430%?x?250%?1.7;
(382)
(383)
(384)
(385)
Ainy晴
Ainy晴
1x?3(x?4)0.5?30.125?5x?19, 0.2x?0.450.25?0.015?0.01x0.015?0.5x?2.5
19{17[15(x?23?4)?6]?8}?1. 1?2?x?1?3?x?1??2??3?3?x?3??????x?; ??4?2?4(386)
(387)
(388)
(389)
(390)
Ainy晴
Ainy晴
111(2x?3)?119(3?2x)?2313x?13. x?3?4??(x?14(x?37)????316(x?37). 3(x?1)?13(x?1)?2(x?1)?12(x?1);
3(x-1)-2(2x+1)=12 ;
5(x+8)-5=6(2x-7);
(391)
(392)
(393)
(394)
(395)
(396)
Ainy晴
Ainy晴
3(k?1)?13(k?1)?2(k?1)?12(k?1)
3(y-7)-2[9-4(2-y)]=22;
5?7x7?5x8?7; 1?yy?23?y?3?2; 6y?34?4y?54 ; 52x?7x4x?x?3??23?6;
(397)
(398)
(400)
(402)
(403)
Ainy晴
x?40.2?x?30.5??1.3; 322[3(x4?1)?2]?x?2; 3x?15?1?x?35; 2(x+2)=5(x+9)-2(x-2);
23x?3?5(x?1)?1 ; Ainy晴
399)12(1?x3)?23(3?x2)?1 401)x?1?xxxx2?4?8?16
404) 2x?12x?510x?172?3?4?1
( (
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