Các câu hỏi tương tự
B1: Tìm x biết:
a, 3x = 81 b, 5 . 4x = 80
c, 2x = 45 : 43 d, 3 . 2x+1 - 32 = 15
e, 5x-1 + 311 : 39 = 34 h, 43 . 4x-1 = 64
45-3(x+2)=23.3
98-(x+4)=20
32.2=54
2x:2=6
x2=25
2x=16
23+3x=56:53
9x-1=9
mng giúp e nhé
1 tháng 10 2021 lúc 21:39
Bài4:Tìm x:a. 124 + (118 – x) 217b. 7x – 8 713c. x- 36:18 12d. (x- 36):18 12e. (x-47) -115 0f. 315 + (146 – x) 401g. (6x – 39 ) : 3 201h. 23 + 3x 56 : 53i. 5x + x 39 – 311:39j. 7x – x 521 : 519 + 3.22 - 70k. 7x – 2x 617: 615 + 44 : 11l. 0 : x 0m. 3x 9n. 4x 64o. 2x 16p. 9x- 1 9q. x4 16r. 2x : 25 1Bài4:Tínhnhanh1. 58.75 + 58.50 – 58.252. 27.39 + 27.63 – 2.273. ...
Đọc tiếp
Bài4:Tìm x:
a. 124 + (118 – x) = 217 b. 7x – 8 = 713 c. x- 36:18 = 12 d. (x- 36):18 = 12 e. (x-47) -115 = 0 f. 315 + (146 – x) = 401 | g. (6x – 39 ) : 3 = 201 h. 23 + 3x = 56 : 53 i. 5x + x = 39 – 311:39 j. 7x – x = 521 : 519 + 3.22 - 70 k. 7x – 2x = 617: 615 + 44 : 11 l. 0 : x = 0 | m. 3x = 9 n. 4x = 64 o. 2x = 16 p. 9x- 1 = 9 q. x4 = 16 r. 2x : 25 = 1 |
Bài4:Tínhnhanh
1. 58.75 + 58.50 – 58.25 2. 27.39 + 27.63 – 2.27 3. 128.46 + 128.32 + 128.22 4. 87.23 + 13.93 + 70.87
| 5. 12.35 + 35.182 – 35.94 6. 48.19 + 48.115 + 134.52 7. 27.121 – 87.27 + 73.34 8. 136.23 + 136.17 – 40.36 9. 125.98 – 125.46 – 52.25 | 10. 17.93 + 116.83 + 17.233 11. 5.23 + 35.41 + 64.65 12. 29.87 – 29.23 + 64.71 13. 19.27 + 47.81 + 19.20
|
Giúp mình v
Bài10872917292872917 tìm x bt
5x-16=40+x
4x-10=15-x
-12+x=5x-2
7x-4=20+3x
5x-7=20+3x
x+15=7+6x
17-x=7-6x
3x+(-21)=12-8x
125:(3x-13)=25
541+(218-z)=735
3(2x+1)-19=14
175-5(x+3)=85
4x-40=|4|+12
x+15=20-4x
8x+|-3|=-4x+39
6(x-2)+(-2)=20-4x
A) 78-2x=42
B)6x+39=75
C) 2^3.x+ 2.x=25.2^2
D) 21+7x = 56
E) 5x +2x = 6^2-5^0
F)15x + 3x = 450 : 2+9
G) 6x+x=5^11: 5^9+3^1
H) 5x + 3x=3^11: 3^8.4+12
i) 2^3.x + 2^2.x =136-2^20 : 2^16
j) 7x -x= 5^21: 5^19+3.2^2
k) 7x - 2x= 6^17: 6^15 + 44 :11
l) 0: x =0 m) 3^x=27 n) 4^x= 64
o) 2^x = 32 p) 9^x-1=81 q) x^4=16
r) 3^x :3^
p) 9^x-1=81
q) x^4=165=1
bài 1
a) 26+5x=3x-56
b)13/4x-7/6x=-5/12+5/3
c)x/ (-5/14)+7/2=-1 và 2/3
tìm xa) 7x - 5 16b) 156 -2x 82c) 10x + 65 125d) 8x + 2x 25.2e) 15 + 5x 40f) 5x + 2x 6 -5g) 5x + x 150 : 2 + 3h) 6x + 3x 5 : 5 + 3i) 5x + 3x 3 : 3 . 4 + 12j) 4x + 2x 68 - 2 :2k) 5x + x 39 - 3 : 3l) 7x - x 5 : 5 + 3.2 - 7m) 7x -2 x 6 : 6 + 44 : 11n) 0 : x 0 o) 3x 9p) 4x 64q) 2x 16r) 9x - 1 9s) x4 16t) 2x : 2 1ai nhanh mk tick cho !!!!!!!
Đọc tiếp
tìm x
a) 7x - 5 = 16
b) 156 -2x = 82
c) 10x + 65 = 125
d) 8x + 2x = 25.2
e) 15 + 5x = 40
f) 5x + 2x = 6 -5
g) 5x + x = 150 : 2 + 3
h) 6x + 3x = 5 : 5 + 3
i) 5x + 3x = 3 : 3 . 4 + 12
j) 4x + 2x = 68 - 2 :2
k) 5x + x = 39 - 3 : 3
l) 7x - x = 5 : 5 + 3.2 - 7
m) 7x -2 x = 6 : 6 + 44 : 11
n) 0 : x = 0
o) 3x = 9
p) 4x = 64
q) 2x = 16
r) 9x - 1 = 9
s) x4 = 16
t) 2x : 2 = 1
ai nhanh mk tick cho !!!!!!!
5) 6x – 5 = 3 + 4x 6) x – (17 – x) = x – 7
7) 9 – 25 = (7 – x) – ( 25 + 7) 8) 10 – 2.(4 – 3x) = - 4
9) (-12)2
.x = 56 + 10. 13x 10) 2x2
– 1 = 49
1/ tính
a,1+3+5+7+...+9
b,1+3+5+7+...+99
c,2+4+6+8+...+10
d,36+37+38+...+70
2/tìm x
a,3x+15=30
b,72-x=64+2x
c,45x-3x=40+2x
d,3x+x=56
e,x-3=0
f,42x=172+x
g,3x=0
h,18.[x-1]=18
i,420.[x-2]=0