a) x = 34
b) x= 5
c) x = 35
d) x = 0
e) x = 410
f) x= 170
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Các câu hỏi tương tự
b1 tìm x ,biết
(x-14)-20=5
128+(202-x)=330
(x-120)*9=450
x-320:32=25*16
25-(2x+10)=5
315-(135-x)=215
x:2+21:3=37
4*(x+100)=800
504:(16-5x)=72
(x-5):7+3=20
mik cảm ơn nhaa
bài 15: tìm x
a) (x - 25 ) - 175 0
b) 485 - ( 6 . x + 60 ) 5
c) ( x - 31 ) - 68 0
d) 274 - ( 9 . x + 18 ) 4
e) 315 + ( 135 - x ) 450
f) 346 + ( 210 - x ) 556
g) 442 + ( 420 - x ) 860
h) 107 + (320 - x ) 317
Đọc tiếp
bài 15: tìm x
a) (x - 25 ) - 175 = 0
b) 485 - ( 6 . x + 60 ) = 5
c) ( x - 31 ) - 68 = 0
d) 274 - ( 9 . x + 18 ) = 4
e) 315 + ( 135 - x ) = 450
f) 346 + ( 210 - x ) = 556
g) 442 + ( 420 - x ) = 860
h) 107 + (320 - x ) = 317
1,Tính giá trị biểu thức
a, 13 . 17 - 256 : 16 + 14 : 7 - 1
b, 15 . 24 - 14 . 5 . (145 : 5 - 27)
c, 15 . 8 - (17 - 30 + 83) - 144 : 6
d,18 - 4 . (27 - 90 + 73) : 10
2,Tìm x
a, 315 - (135 - x)=215
b, x - 320 : 32 = 25 . 16
c, 3 . x - 2018 : 2 = 23
d, 280 - 9 . x - x = 80
e, 38 . x - 12 . x - x . 16 = 40
Giúp mình với nhé,mình đang cần gấp !!
1.Tìm x , biết :a)35.(x-10)35b)21.(32-x)21c)25.(2x.4).120d)(x-4):6-510e)485-(6.x+60)5f)315+(135-x)450g)346+(210-x)556h)(x-32)-680i)274-(9.x+18)4j)442+(418-x)860k)107+(210-x)317l)x-280:355.54m)(x-120):355n)(x+100)800o)x.5+10.9990p)x-120:3040q)(x+120):208r)(x+5).3300s)x.2+21:3272.Tính nhanha) 99 - 97 + 95 - 93 + 91 - 89 + ... + 7 - 5 + 3 -1b)47.8 - 27.9 + 47.12 - 27.11c) 1326 +538-326-62d) 2391-147-253e) 8-96+94-92+90-88+...+7-5+3-1f) 24.42-35.24-24.7g)42.13-22.5+42.22h)125:4-25:4i)1159:125-159:12...
Đọc tiếp
1.Tìm x , biết :
a)35.(x-10)=35
b)21.(32-x)=21
c)25.(2x.4).12=0
d)(x-4):6-5=10
e)485-(6.x+60)=5
f)315+(135-x)=450
g)346+(210-x)=556
h)(x-32)-68=0
i)274-(9.x+18)=4
j)442+(418-x)=860
k)107+(210-x)=317
l)x-280:35=5.54
m)(x-120):35=5
n)(x+100)=800
o)x.5+10.9=990
p)x-120:30=40
q)(x+120):20=8
r)(x+5).3=300
s)x.2+21:3=27
2.Tính nhanh
a) 99 - 97 + 95 - 93 + 91 - 89 + ... + 7 - 5 + 3 -1
b)47.8 - 27.9 + 47.12 - 27.11
c) 1326 +538-326-62
d) 2391-147-253
e) 8-96+94-92+90-88+...+7-5+3-1
f) 24.42-35.24-24.7
g)42.13-22.5+42.22
h)125:4-25:4
i)1159:125-159:125
*Lưu ý : các dấu (.) bằng với dấu nhân nhé
Tìm x, biết:a) (x- 25)-175 0;b) 485 - ( 6.x + 60) 5c) 315 + (135 - x) 450;d) 346 + ( 210 - x) 556
Đọc tiếp
Tìm x, biết:
a) (x- 25)-175 = 0;
b) 485 - ( 6.x + 60) = 5
c) 315 + (135 - x) = 450;
d) 346 + ( 210 - x) = 556
Tìm x, biết:a) (x- 25)-175 0;b) 485 - ( 6.x + 60) 5c) 315 + (135 - x) 450; d) 346 + ( 210 - x) 556.
Đọc tiếp
Tìm x, biết:
a) (x- 25)-175 = 0;
b) 485 - ( 6.x + 60) = 5
c) 315 + (135 - x) = 450;
d) 346 + ( 210 - x) = 556.
Tìm x, biếta) 575 – (6X + 70) 445 b) (32.15) : 2 (X +70) : 14 – 40c) (X – 15) -75 0 d) 420 + 65.4 (X + 175):5 +30e) X – 4867 (175.2050.70) : 25 + 23 f) [(X + 32) -17].2 42g) 96 – 3.(X+1)42 h) 165 – 19.(35 : X + 3) 13
Đọc tiếp
Tìm x, biết
a) 575 – (6X + 70) = 445
b) (32.15) : 2 = (X +70) : 14 – 40
c) (X – 15) -75 = 0 d) 420 + 65.4 = (X + 175):5 +30
e) X – 4867 = (175.2050.70) : 25 + 23 f) [(X + 32) -17].2 = 42
g) 96 – 3.(X+1)=42 h) 165 – 19.(35 : X + 3) = 13
5 Tìm số nguyên x , biết
a) x + 49 = - 97
b) x - 53 = - 61
c) 158 - x = - 92
d) - 218 + x = 147
e) - 135 - x = 41
f) x + 215 = - 315
g) 148 - x = 942
h) 47 - ( - x ) = 18
i) - x + 45 = - 14
a) x-280;35=5.54
b) (x-280);35=56;5
c)x;15+42=13+25.8
d) (x-128+20);192=0
e) 460+85.4=(x+200).4
g) x+5.2-(32+16.3;16-15)=0
h) 2448;[119-(x-6)]=24
i) 20-[7.(x-3)+4]=2
k) x;[(1800+600);30]=560;(315-35)
l) [(1250-25);15];x=(450-60);130
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