a) | x | − 3 4 = 5 3 ⇒ | x | = 29 12 ⇒ x = 29 12 x = − 29 12
b) x − 3 2 = 1 ⇒ x − 3 2 = 1 x − 3 2 = − 1 ⇒ x = 5 2 x = 1 2
a) | x | − 3 4 = 5 3 ⇒ | x | = 29 12 ⇒ x = 29 12 x = − 29 12
b) x − 3 2 = 1 ⇒ x − 3 2 = 1 x − 3 2 = − 1 ⇒ x = 5 2 x = 1 2
Tìm x, biết:
a) \(\dfrac{x}{3}\) - 5 = \(\dfrac{2x}{5}\)
b) 4 + 3x = 8 - x
c) 2 . 3\(^{x+1}\) - 5 . 3\(^x\) = 243
Tìm x, biết:
a.1/4+3/4.x=3/2-x
b.3/5.x-1/4=1/10.x-1/2
c.3x-3/5=x-1/4
d.3/2.x-2/5=1/3.x-1/4
Tìm x, biết:
a) \(\left(3\dfrac{1}{2}+2x\right).2\dfrac{2}{3}=5\dfrac{1}{3}\)
b) \(\left(2x+3\right)=5\)
c) \(\dfrac{x-2}{4}=\dfrac{5+x}{3}\)
Bài 2: Tìm x, biết:
a) \(5,2.x+7\dfrac{2}{5}=6\dfrac{3}{4}\)
b) \(2,4:\left(\dfrac{-1}{2}-x\right)=1\dfrac{3}{5}\)
Câu 4:Tìm các số nguyên x,y biết:
a)x/2 = -5/y b)3/x = y/4 (trong đó x > y > 0) c)3/x-1 = y+1 d)x+2/5 = 1/y
Giúp mình với ạ!!!
.Tìm sô nguyên x biết:a,3.(x-1)-1=26.b, |x+4|-9= (-2) mũ 3.c, 2x-5 chia hết x-1
tìm x , biết:
a) \(x\) : \(4\dfrac{1}{3}\) = -2,5 b) \(\dfrac{3}{5}x\) + \(\dfrac{1}{4}\) = \(\dfrac{1}{10}\)
c) \(2\dfrac{7}{9}\) \(-\) \(\dfrac{12}{13}x\) = \(\dfrac{7}{9}\) d)\(\dfrac{-2}{3}-\dfrac{1}{3}\)\(\left(2x-5\right)=\dfrac{3}{2}\)
Bài 4. Tìm x biết:
a. \(\dfrac{x}{5}=\dfrac{2}{5},\dfrac{3}{8}=\dfrac{6}{x},\dfrac{1}{9}=\dfrac{x}{27}\)
b. \(\dfrac{4}{x}=\dfrac{8}{6},\dfrac{3}{x-5}=\dfrac{-4}{x+2},\dfrac{x}{-2}=\dfrac{-8}{x}\)
Tìm x biết:
a) -3/4 = x/20
b) - (-6)/12 - x = 9/48
c)3/5 - ( 2 và 1/5 - x) 2= 6/25
Tìm x, biết:
a) \(\dfrac{3}{4}x\) - \(\dfrac{7}{12}\) = \(\dfrac{5}{6}\) - \(\dfrac{2}{3}\)
b) -\(\dfrac{5}{x}\) = \(\dfrac{20}{28}\)
c) \(2\dfrac{1}{3}\) : x = 7
d) \(\dfrac{-105}{12}\) < x < \(\dfrac{20}{7}\)