涓�锛夌煡璇嗚鐐癸細
1
锛庝竴鍏冧竴娆℃柟绋嬬殑姒傚康锛?/p>
鍙惈鏈変竴涓湭鐭ユ暟
,
骞朵笖鏈煡鏁扮殑娆℃暟鏄?/p>
1,
绯绘暟涓嶄负
0
鐨勬柟绋嬪彨鍋氫竴鍏冧竴娆℃柟绋?/p>
.
涓�鍏冧竴娆℃柟绋嬬殑鏍囧噯褰㈠紡鏄細
ax+b=0
(
鍏朵腑
x
鏄湭鐭ユ暟
,a,b
鏄凡鐭ユ暟
,
涓?/p>
a
鈮?/p>
0),
瀹冪殑瑙?/p>
鏄?/p>
x=- .
鎴戜滑鍒ゆ柇涓�涓柟绋嬫槸涓嶆槸涓�鍏冧竴娆℃柟绋嬭鐪嬪畠鍖栫畝鍚庣殑鏈�绠�褰㈠紡鏄笉鏄爣鍑嗗舰寮?/p>
ax+b=0
(a
鈮?/p>
0).
渚?/p>
濡?/p>
鏂?/p>
绋?/p>
3x2+5=8x+3x2,
鍖?/p>
绠�
鎴?/p>
8x-5=0
鏄?/p>
涓�
鍏?/p>
涓�
娆?/p>
鏂?/p>
绋?/p>
锛?/p>
鑰?/p>
鏂?/p>
绋?/p>
4x-7=3x-7+x
琛ㄩ潰涓婄湅鏈変竴涓湭鐭ユ暟
x,
涓?/p>
x
鐨勬鏁版槸涓�娆?/p>
,
浣嗗寲绠�鍚庝负
0x=0,
涓嶆槸涓�鍏冧竴娆?/p>
鏂圭▼
.
2
锛庤В涓�鍏冧竴娆℃柟绋嬬殑涓�鑸楠わ細
锛?/p>
1
锛夋柟绋嬪惈鏈夊垎姣嶆椂瑕佸厛鍘诲垎姣?/p>
,
浣胯繃绋嬬畝渚?/p>
,
鍏蜂綋鍋氭硶涓猴細鍦ㄦ柟绋嬬殑涓よ竟閮戒箻浠ュ悇鍒?/p>
姣嶇殑鏈�灏忓叕鍊嶆暟
.
瑕佹敞鎰忎笉瑕佹紡鎺変笉鍚垎姣嶇殑椤?/p>
,
濡傛柟绋?/p>
x+ =3,
鍘诲垎姣嶅緱
10x+3=3
灏遍敊浜?/p>
,
鍥犱负鏂圭▼鍙宠竟蹇樿涔樹互
6,
閫犳垚閿欒
.
锛?/p>
2
锛?/p>
鍘绘嫭鍙凤細
鎸夌収鍘绘嫭鍙锋硶鍒欏厛鍘诲皬鎷彿
,
鍐嶅幓涓嫭鍙?/p>
,
鏈�鍚庡幓澶ф嫭鍙?/p>
.
鐗瑰埆娉ㄦ剰鎷彿鍓?/p>
鏄礋鍙锋椂
,
鍘绘帀璐熷彿鍜屾嫭鍙?/p>
,
鎷彿閲岀殑鍚勯」閮借鍙樺彿
.
鎷彿鍓嶆湁鏁板瓧鍥犳暟鏃惰娉ㄦ剰浣跨敤鍒嗛厤
寰?/p>
.
锛?/p>
3
锛夌Щ椤癸細鎶婂惈鏈夋湭鐭ユ暟鐨勯」閮界Щ鍒版柟绋嬬殑涓�杈?/p>
,
鍏朵粬椤归兘绉诲埌鏂圭▼鐨勫彟涓�杈?/p>
.
娉ㄦ剰绉?/p>
椤硅鍙樺彿
.
锛?/p>
4
锛夊悎骞堕」锛氭妸鏂圭▼鍖栨垚鏈�绠�褰㈠紡
ax=b (a
鈮?/p>
0).
锛?/p>
5
锛夋妸鏈煡鏁扮殑绯绘暟鍖栨垚
1
锛氬湪鏂圭▼涓よ竟閮介櫎浠ユ湭鐭ユ暟鐨勭郴鏁?/p>
a,
寰楀埌鏂圭▼鐨勮В
x=
.
瑙ｆ柟绋嬫椂涓婅堪姝ラ鏈変簺鍙兘鐢ㄤ笉鍒?/p>
,
骞朵笖涔熶笉涓�瀹氭寜鐓т笂杩伴『搴?/p>
,
瑕佹牴鎹柟绋嬬殑鍏蜂綋褰?/p>
寮忕伒娲诲畨鎺掓眰瑙ｆ楠?/p>
.
锛堜簩锛変緥棰橈細
渚?/p>
1
锛庤В鏂圭▼
(x-5)=3- (x-5)
鍒嗘瀽锛氭寜甯歌姝ゆ柟绋嬪簲鍏堝幓鍒嗘瘝
,
鍘绘嫭鍙?/p>
,
浣嗗彂鐜版柟绋嬪乏鍙充袱杈归兘鍚湁
x-5
椤?/p>
,
鎵�浠ュ彲浠?/p>
鎶婂畠浠湅浣滀竴涓暣浣?/p>
,
绉婚」
,
鍚堝苟
,
浣胯繍绠楃畝渚?/p>
.
绉婚」寰楋細
(x-5)+ (x-5)=3
鍚堝苟寰楋細
x-5=3
鈭?/p>
x=8.
渚?/p>
2
锛庤В鏂圭▼
2x-3(x+1)/6 =4/3 -(x+2)/3
鍥犱负鏂圭▼鍚湁鍒嗘瘝
,
搴斿厛鍘诲垎姣?/p>
.
鍘诲垎姣嶏細
12x-3(x+1)=8-2(x+2)
锛堟敞鎰忔瘡涓�椤归兘瑕佷箻浠?/p>
6
锛?/p>
鍘绘嫭鍙凤細
12x-3x-3=8-2x-4
(
娉ㄦ剰鍒嗛厤寰嬪強鍘绘嫭鍙锋硶鍒?/p>
)
绉婚」锛?/p>
12x-3x+2x=8-4+3
鍚堝苟锛?/p>
11x=7
绯绘暟鍖栨垚
1
锛?/p>
x=7/11 .
渚?/p>
3
锛?/p>
1/9{1/7[1/5((x+2)/3 +4)+6]+8}=1
瑙ｆ硶
1
锛氫粠澶栧悜閲岄�愭笎鍘绘嫭鍙?/p>
,
灞曞紑姹?/p>
鍘诲ぇ鎷彿寰楋細
1/7[1/5((x+2)/3+4)+6]+8=9
鍘讳腑鎷彿寰楋細
1/5((x+2)/3+4)+6+56=63
鏁寸悊寰楋細
1/5((x+2)/3+4)=1
鍘诲皬鎷彿寰楋細
(x+2)/3+4=5
鍘诲垎姣嶅緱锛?/p>
x+2+12=15
绉婚」
,
鍚堝苟寰楋細
x=1.