Tìm x biết

a) I x - 2I = x b) I x + 2I = x

c) I x - 3,4 I + I 2,6 - x I =0

d) I x I +x = \(\frac{1}{3}\) e) I x I - x =\(\frac{3}{4}\)

tìm x biết |x-1|+|x+2|=0

BT1: Tìm x, biết:

4) \(\text{|}\text{|}0,4.x-25\%\text{|}-4\text{|}=3\)

BT1: Tìm x, biết:

5) \(\text{|}x+\dfrac{1}{3}\text{|}+\text{|}x+\dfrac{1}{5}\text{|}+\text{|}x+\dfrac{1}{15}\text{|}=4x\)

BT1: Tìm x, biết:

1) \(\dfrac{1}{3}-\left(1\dfrac{1}{2}-x\right)=0,3\)

-1,75-(\(\dfrac{-1}{9}\)-\(2\dfrac{1}{18}\))

a)\(-\dfrac{3}{4}.31\dfrac{11}{23}-0,75.8\dfrac{12}{23}\)

A=( 3 +\(\dfrac{1}{2}\)-\(\dfrac{2}{3}\)) - ( 2-\(\dfrac{2}{3}\)+\(\dfrac{5}{2}\)) - ( 5-\(\dfrac{5}{2}\)+\(\dfrac{4}{3}\))

Tính giá trị của A theo 2 cách

ai nhanh mình tick

2. Tính nhanh

a) A=(\(\dfrac{1}{2}\)- \(\dfrac{7}{13}\)-\(\dfrac{1}{3}\))+(\(\dfrac{-6}{13}\) +\(\dfrac{1}{2}\)+1\(\dfrac{1}{3}\))

b) B = (-1\(\dfrac{1}{2}\):\(\dfrac{3}{-4}\)) .(-4\(\dfrac{1}{2}\)) -\(\dfrac{1}{4}\)

Giúp mình với

Tìm x, biết
a. x + \(\dfrac{3}{10}=\dfrac{-2}{15}\)
b. \(\dfrac{-11}{12}x+0,25=\dfrac{5}{6}\)
c. x + (x+1)+(x+2)+==+(x+2002)=2004