Luyện tập TÌM x (dành cho hs YẾU lấy lại căn bản)

LuyệntậpTÌMXlớp6(dànhchohsYẾUlấylạicănbảnvànângcaolevelMAXJ)
1/
a.x+3=5
g.x–9=21
n.10–(2+x)=8
v.x–12+3=21
b.5+x=10
h.2+(3+x)=16
o.32+x–10=15
w.x–(15–12)=13
c.15–x=5
i.4+x–2=10
p.21–(x–3)=13
x.(x+13)–2=5
d.x–13=26
j.6–(x+2)=0
r.x–10+2=7
y.10–x–2=12–2x
e.10+x=13
k.x–3+7=15
s.x+(3–2)=10
z.9–(3–x)=8
f.x+4=9
l.9+2–x=3
t.x–4–10=3
j.8–x=6
m.3+x+4=12
u.40+x+2=20+2x

2/

a.2.x=6
k**.18:(3.x).2=24(x≠0)
u.12:2x=3(x≠0)
b.x.3=9
l.24:3.x=4
u*.12:2.x=2
c.x:5=20
l*.24:3x=4(x≠0)
u**.12:(2.x)=3(x≠0)
d.30:x=15(x≠0)
l**.24:(3.x)=4(x≠0)
v.12:2.x=18
e.4x=24
m.(30:x).2=4(x≠0)
w.2x:x=2(x≠0)
f.9x=81
n.4x:8=1
x.16.2x.3=192
j.121:x=11
o.9:x.2=6(x≠0)
x*.16.2.x.3=288
g.x:21=63
p.2x:9=54
y.5.(x:3)=30
h2x:3=8
r.x:10:2=5
z.81:x.3=9(x≠0)
i.3x.2:3=4
s.9:(3:x)=9(x≠0)
z*.81:(x.3)=9(x≠0)

j.4x:4.2=6
s*.(9:3):x=1(x≠0)
z**.(81:x).3=9(x≠0)
k.18:3x.2=24(x≠0)
s**.9:3x=9(x≠0)
k*.18:3.x.2=24
t.3.(24:x)=12(x≠0)

3/
a.x2=4
i*.2x=24
r.2x2.4=25
x
x
a*.2 =4
i**.2 =1
r*.2.2x.4=25
a**.2x=1
j.x4=22.26
r**.2x2:4=2
b.x2=9
j*.4x=22.26
r***.2.2x:4=2
b*.3x=9
j**.4x=1
s.6x.3x=10.32
x
2
3
2 3

b**.3 =1
k.x .x =3 .3
s*.6x:3x=1(x≠0)
c.x3=8
k*.3x=32.33
t.32.x3=8.32
c*.3x=8
k**.3x=1
t*.32.2x=8.32
x
2
c**.3 =1
l.x .x=27
t**.32.2x=9
d.x3=27
l*.3x.3=27
t***.32:2x=9
x
x
d*.3 =27
l**.3 .3=3
u.x.(3x)2=32.53
"
d**.3x=1
m.2x2=32
u*.x.(3:x)2= (x≠0)
%
e.x.x=16
m*.2.4x=32
v.9x:x=9(x≠0)

x
f.x.x.x=125
m**.2.4 =2
w.x3:x=81(x≠0)
4
3
g.x =81
n.(2x) =108
w*.x4:x2=43(x≠0)
g*.3x=81
n*.(2.3)x=108
x.(3x2)3:9x2=768(x≠0)
x
x
g**.3 =1
n**.(2.3) =1
y.x4:2x2=26(x≠0)
h.x4.x2=64
o.(3x)2.(2x)3=17496
z.2.(x3:x2)=10(x≠0)
2
3 "
h*.4x.2x=64
o*.(3x) :(2x) = (x≠0)
#
h**.4x.2x=1
2 3
p.(2x
)
=512

i.x2=24







4/Nângcao
a.2x+3=13
b.10–5x=2
c.(10+x)+3x=18
d.x2+2.3=24
e.x2+2x2=27
f.x4=4x2
g.8x5=2x3
g*.2x5=8x3
h.3x.32x=27
i.9x–2=81
j.4x.2x=8.8
j*.4x:2x=8.8
k.x5=x2
l.x10:x5–(104:102+143)=0
l*.32x:3x–(104:102+143)=0

m.2x+4x2=0
n.4.2+x2:11=3
o.4.(x3–2):4=25
o*.4.(3x–2):4=25
p.[(3x)3–102]:58=2
p*.[(3.2)x–102]:58=2
r.102–{20.[(20.9):(x2–3.2)]}=22.10
s.3x.[20160+21:(2.130)]=99
t.63x:6(2+x)=26.36
u.412:23x=16
v.56:[(22x.4x):8]=75:74
w.[32.(x2–24:22)]+27=27
y.x20:x0=1
z.x100:{(x20)2.[(x30:(x10)2]3.(x5)6}=?