Các câu hỏi tương tự
A, 7 x - x = 5^21 : 5^19 + 3 . 2^2 - 7^0
B, 6 x + x = 5^11 : 5^19 + 3^1
C, 7 x - 2x = 6^17 : 6^15 + 44:11
Bài 1 Tìm x,biết
x.3/5=2/3
x.7/17=17/8
3/4 chia x=-7/12
3/8 - 1/6.x=1/4
1/3+1/2 chia x=-4
Bài 2 Tính
-6/11 chia [3/5 . 4/11]
7/12 + 5/12 chia 6 -11/36
[4/5 + 1/2] chia [3/13 - 8/13]
[2/3 - 1/4 + 5/11] chia [5/12 + 1 -7/11]
*Dấu . là dấu nhân nha mn*
Tính nhanh: LƯU Ý tất cả số dưới đây đều là phân số
1,1/8 x 2/5 + 3/5 + 1/8
2,( -1)/15 x 2/5 + (-5)/3 x (-1)/13
3,4/9 : 11/6 + 5/9 x 6/11
4,5/19 x 7/13 + 7/19 x 8/13 - 3 x 7/19
5, 2/7 x 4/23 - 2/7 x 27/23 + 2/7
6,3/8 x 3/7 +3/8 x 4/7 + 11/8
7,-5/27 : 6/11 - 16/11 x 5/27 - 5/27
8, 5/16 x 7/8 - 5/16 x 1/8 + 10/8 :16/5
9,1/3 x 39/17 - 129/3 x 1/17
10,5/2 : 23/3 - 3/2 x 7/23
Tim x biet
A, 2x +23x = 625
B, (2^2+4^2) x + 2^4 ×5 ×x =100
C, (3x + 1)^2 = 6^2 + 8^2
D, (7x -11)^3 = 7^2 × 5^2 - 15^2
E, (2x- 1)^4 = 3× (3^2+4^3+2)
a, 2.x + 7 = 15
b, 25 – 3.(6 – x) = 22
c, [(2x – 11) : 3 + 1].5 = 20
d, (25 – 2x)3 : 5 – 32 = 42
e, 2 . 3x = 10 . 312 + 8 . 274
g, x – 12 = (–8) + (–17)
h, 7 – 2x = 18 – 3x
i, 3(x + 5) – x – 11 = 24
a) 5/11 x 3/7 +5/11 x 4/7 -3/11
b) -13/8 + 5/8 + 7/5 - 2/7 + 1/2
Tim x
A, 6 x + x = 5^11 : 5^9 +3^1
B, 7 x - x = 5^21 : 5^19 + 3 . 2^2 -7^0
C, 7 x - 2x = 6^17 : 6^15 + 44 : 11
giup minh nhe . Thank you
1) 27,56 x 35 + 27,56 x67- 27,56 x2
2) 4 x 35 x 25 x 5 x2
3) ( 32 x 18 - 16 x 36 ) x( 1+3+5+7+......+1001)
4) 3/5 + 2/5 x 1/2 - 2/3 x 3/4
5) 27 x 13 + 35 x 27 - 12 x 9
6) 33/5 x 15/11 + 22/27 x 81/44 - 3/5 : 9/5
Tìm x biết
8) ( 13/ 10 x- 15) . -5/ 14= 3
10) ( 5,5 x- 44) : ( -3/ 2) = 30
11/ 14: ( 2x+ 5/7) = 11/ 18