\(\left(-\frac{15}{12}\right)x+\frac{3}{7}=\frac{6}{5}x-\frac{1}{2}\)
\(\left(-\frac{15}{12}\right)x-\frac{6}{5}x=-\frac{1}{2}-\frac{3}{7}\)
\(\left(-\frac{15}{12}-\frac{6}{5}\right)x=-\frac{7}{14}+\left(-\frac{6}{14}\right)\)
\(\left(-\frac{75}{60}-\frac{72}{60}\right)x=-\frac{13}{14}\)
\(-\frac{147}{60}x=-\frac{13}{14}\)
\(x=-\frac{13}{14}:-\frac{147}{60}\)
\(x=\frac{130}{343}\)
Tìm x biết :
a, 4.(18 - 5x) - 12.(3x - 7) = 15.(2x - 16) - 6(x + 14)
b, 5.(3x + 5) - 4.(2x - 3) = 5x + 3.(2x + 12) + 1
c, 2.(5x - 8) - 3.(4x - 5) = 4.(3x - 4) + 11
d, (3x + 2)(2x + 9) - (x + 2)(6x + 1) = (x + 1) - (x - 6)
e, (8x - 3)(3x + 2) - (4x + 7)(x + 4)= (2x + 1)(5x - 1) - 33
Tìm x biết:
a) 4(18-5x) - 12(3x-7) = 15(2x-16) - 6(x+14)
b) 5(3x+5) - 4(2x-3) = 5x+3(2x+12)+1
c)2(5x-8) - 3(4x-5) = 4(3x-4) + 11
d) 5x-3 {4x-2 [4x-3(5x-2)]}=182
a, 2x( 3x + 1 ) + 3x ( 4 - 2x ) = 7
b, 4(18 - 5x ) - 12( 3x - 7 ) = 15(2x - 16 ) - 6(x + 14 )
c, ( 3x + 2 ) ( 2x + 9 ) - ( x + 2 ) ( 6x + 1 ) = ( x + 1 ) - ( x - 6 )
Tìm x
x.(1/4+1/5)-(1/7+1/8)=0
(5x-1)(2x-1/3)=0
-15/12x+3/7=6/5x-1/2
5x+5x+2=650
Tìm x biết -15/2X+3/7=6/5x-1/2
Hỏi cho vui thui chán quá :)))
Bài 1:Tìm x
a) 5x - 16 = 40 + x e) 2 (x -5) - 3 (x + 7) = 14
b) 4x - 10 = 15 - x g) 5 (x - 6) - 2 (x + 3) = 12
c) -12 + x = 5x - 20 h) -3 (x - 5) + 6 (x + 2)= 9
d) x + 15 = 7 - 6x i) 10 (x - 7) - 8 (x + 5) = 6 . (-5) + 24
Bài 2:Tính các tổng sau:
a) A = 1-2+3-4+5-6+7-8+..............+2005-2006
b) B = 1-3+5-7+..................+2021-2023
c) C = 2-4+6-8+...............+2008-2010
Bài 3; Tìm x biết:
(x + 1) + (x + 2) + (x + 3) + .......................(x +1000) = 5750
ai xong đầu tiên cho tick free nè :)))
Tìm x
a- 10/x=-12/36
b- 2,1/0,7=x/3
c- 11/132=-7/x
d- 30×5x=4×12
e- 15×6=-2x(-4)
Thực hiện phép tính: a,(9/10 - 15/16) X (5/12 - 11/15 - 7/20) b,(-1)3 + (-2/3)2: 2 2/3 + 5/6 c,15 X (-1/5)2 + 1/5 - 2 X (-1/2)3 - 1/2 d,22 - (-5/7) + (1/3)4 X 36
Giúp e vs ah e cảm ơn trc ah:
Bài 1: a. X:14=28:2x
b. 18:5x^2=x: 15/2
c. (X+1):3=12:(x+1)
Bài 2:
2^15x9^4+6^10x2^5/6^7x8^3-12^8
