\(\left(-\dfrac{5}{6}.x+\dfrac{5}{4}\right):\dfrac{3}{2}=\dfrac{4}{3}< =>-\dfrac{5}{6}.x+\dfrac{5}{4}=2< =>-\dfrac{5}{6}.x=\dfrac{3}{4}< =>x=-\dfrac{9}{10}\)
Vậy ....
\(\left(-\dfrac{5}{6}.x+\dfrac{5}{4}\right):\dfrac{3}{2}=\dfrac{4}{3}< =>-\dfrac{5}{6}.x+\dfrac{5}{4}=2< =>-\dfrac{5}{6}.x=\dfrac{3}{4}< =>x=-\dfrac{9}{10}\)
Vậy ....
1. Tìm số nguyên x, y biết:
a) \(^{3^{4-x}}=27\)
b) \(^{3^{-1}}.^{4^x}+3.^{4^x}=\dfrac{5}{3}.^{2^7}\)
a ) 4 . 3^x-1 + 2 . 3^x+2 = 4 . 3^6 + 2 . 3^9
b ) 5^x+4 - 3 . 5^x+3 = 2 . 5^11
c ) 11 . 6^x-1 = 11 . 6^11 + 2 . 6^13
1. Tìm các số nguyên x,y biết :
a) \(^{3^{4-x}}\)-x = 2
b)3^-1.4^x + 3.4^x = \(\dfrac{5}{3}\).\(^{2^7}\)
Tìm x biết:
1)25/12x+11/15=9/10
2)3/2x-2/5=1/3x-1/4
3)29/12[x]-5/6=3/8
4)[4x+3/4]-5/4=2
5)2x+2x+3=144
a, 6x^3 - 3x^2 + 2|x| + 4 với x = -2/3
Tìm x biết
a) 2/3+ 7/4 : x = 5/6
b) (x + 5/3) . (x - 5/4)= 0
c) (x- 1,2)^2 = 4
d) (x +1)^3 = -125
tìm x biết
a)3/4+1/4:x=2/5
b)x/-2=-8/x(x khác 0)
c)(x-1)/5=20/x-1
d)(x-3/5)^2=4
Tìm x biết
1)1/4+1/3:1/2x=-5
2)-4/5-2/3:x=-5/12
( Câu hỏi dễ nà trả lời nhanh , đúng mik sẽ tick cho :3 )
a ) 3/5 . 4^x = 3/5 . 4^5
b ) 5 . 3^x+6 = 2 . 3^5 + 3 . 3^5
Tìm x biết:
a) \(x:\left(-\dfrac{1}{2}\right)^3=-\dfrac{1}{2}\); b) \(\left(\dfrac{3}{4}\right)^5.x=\left(\dfrac{3}{4}\right)^7\)