1、个人收集整理 勿做商业用途
(1) 3.5X+1。8=12.3 (5) X+X=21 (6) X+X=
(7) 3.6X÷2=2.16 (8) X+X= (2) 0.8X-4=1。6
(3) 5X÷2=10 (4) X-0.25X=3 (9) X-X=
(10) X-= (11) 2X+7X= (12) +X=
(13) X=
2、 (14) X= (15) X=10
(16) 180+6X=330 (17) 2.2X-1=10 (18) X-0.8X=10
(19) 15X÷2=60 (20) 4X+X=3。15 (21)3。4X+1.8=8.6
(22) 5X-X=2。4 (23) 1。5X-X=1 (24) 6。6X-6X=1。8
(25) 2X-X=
(1)χ+2.4χ=6
(2)3.
3、5: χ=5:4.2
(3)1.8χ-χ=2.4
(4)=
(5)6×3-1。8χ=7。2
(6)17-5χ=2。4+3
(8) χ-χ=
(9)12。6×-2χ=8
(10)=
(11)×-χ=
(12) χ+50%=42
(13)4χ-13=31
(14)4。5+8χ=27
(15)2χ+4。3×3=14
(16) χ×(1-)=1
(17)χ-χ=
(18)3÷4χ=2.5
(19)=
4、
(20)1.6:χ=:
(21)3χ-16×3=102
(22)x:1=:
(23)4χ+7。1=12.5
(24)χ:0.6=:4
(25):=:χ
(26) 0.3χ-2=9。1
(27)=
(28)x-=
(29) χ: =:
(30): χ=:
(31)3χ+χ=2
(32):=0。3: χ
(33)131-χ=89。2
(34):0.25=80%: χ
(3
5、5)4χ+7。1=12.5
(36)-χ=
(37)χ-χ+=
(38):=χ:12
(39) χ-χ=
(40) χ:=12:3
(41)2。4χ-0。45×2=0。3
(42):=χ:0。1
(43)6。3-5χ=4.1
(44)1。25:5=0。75:χ
(45):χ=:6
(46)×2。5-χ=0.6
(47) χ-χ=
(48): χ=:
(49)=
(50)χ-χ+1.2=3。4
(51)4:6=15:χ
(52):=χ: