第10次课解一元一次方程的练习题
第10次课 解一元一次方程的练习题
随堂练习:
4,3(2,x),5x3(x,2),2,5(x,2)(1) (2) (3) 2x,5,5x,7
3(1)2(2)23xxx,,,,,3(2)1(21)xxx,,,,,(4) 2(x+3),5(1,x)=3(x,1) (5) (6)
1x,12x,1x+2x2139x,,,(7)=3x-1 (8) = +1 (9) (10) ,,132232
431111(11) (12 ) (13) 3,1.2x,x,12xx,,,0.40.3xxxx,,,,1542248
xx,1x,83142xx,,(14) (16) (15) ,,1,,1,,x25253
571131257yy,,(17) x,1,2x, (18) (19) ,,,,61xx,,2233243
1,m3,3my,1y,212,,xxy,,2,,,1(20) (21) (22) x,,,1253624
x,2x,11138,,xx(23) (24) (x-3)=2-(x-3) (25) ,,3,,1220.20.523
x,1x,32,18yyxx,,223(26) (27) (28) ,,3y,,,2,,10.20.016946
xxx,,,124112,,312,,) (30) (31) (29[(1)](1)xxx,,,, 4x,,,2x,,,,,,223233362,,,,
43x,,32112131x,,,,(1)323,,,,x(32) (33) (34) (1)(2)2,,,,xx,1,2,2,x,,,,,,322423423423,,,,,,
x,1x,3(35)、当x取何值时,代数式x,比,的值大1, 35
32a,(36)、如果方程21xax,,,的解是x,,4,求的值.
1mxmx(4)2(3),,,(37)、y=1是方程的解,求关于x的方程的解。 2()2,,,myy3
kx,23(1)0,,,x(38)、方程的解与关于x的方程的解互为倒数,求k的值。 ,,,322kx2
3228490xxkx,,,,3159kk,,(39)、已知x=-1是关于x的方程的一个解,求5的值。
2(40)已知等式是关于的一元一次方程(即未知),求这个方程的解. (2)10axax,,,,xx
家庭作业:
1113142xx,,xx,1(1) (2) xxxx,,,,1,,1(3) 1,,2482525
571131257yy,, (5) (6) (4) 12xx,,,,,,,61xx,,2233243
1,m3,3my,1y,212,,xxy,,2,,,1 (7) (8) (9) x,,,1253624
10x,2010x,101138,,xx (10) (11) (x-3)=2-(x-3) (12),,3 ,,1222523
2,18yyxx,,223xxx,,,124 (13) (14) (15) y,,,2,,1,,6946362
112131x312,,,,、 (17) (18) (1)(2)2,,,,x[(1)](1)xxx,,,,(16) 42xx,,,,,,,4234223233,,,,
43x512,,,,7x,12x,,8,(6x,9)(1)323,,,,x (19) 2139x,,, (20) (21) ,,,,323322,,,,
111,,32112,, (22) (23) x,[x,(x,6)],(x,6),3x,1,2,2,x,,,,23623423,,,,
1x,12x,1x+2x,8(24) = +1 (25) (26) ,,1,,x32323
431 (27) 3,1.2x,x,12 (28 ) xx,,,0.40.3542