20 tháng 7 2021 lúc 11:17
Bài 4: Giá trị tuyệt đối của một số hữu tỉ. Cộng, trừ, nhân, chia số thập phân
Các câu hỏi tương tự
Câu 1: Tinh
Aleft(dfrac{3}{5}right)^2.5^2-left(2dfrac{1}{4}right)^3:left(dfrac{3}{4}right)^3+dfrac{1}{2}
Bleft[dfrac{4}{11}.left(dfrac{1}{25}right)^0+dfrac{7}{22}.2right]^{2010}-left(dfrac{1}{2^2}:dfrac{8^2}{4^4}right)^{2009}
dfrac{7}{8}.left(dfrac{2}{12}+dfrac{4}{10}right)
dfrac{3}{2}-dfrac{5}{6}:left(dfrac{1}{2}right)^2+sqrt{4}
Câu 2: Tim x
2.x-dfrac{5}{4}dfrac{20}{15}
left(x+dfrac{1}{3}right)^3left(dfrac{-1}{8}right)
Đọc tiếp
Câu 1: Tinh
\(A=\left(\dfrac{3}{5}\right)^2.5^2-\left(2\dfrac{1}{4}\right)^3:\left(\dfrac{3}{4}\right)^3+\dfrac{1}{2}\)
\(B=\left[\dfrac{4}{11}.\left(\dfrac{1}{25}\right)^0+\dfrac{7}{22}.2\right]^{2010}-\left(\dfrac{1}{2^2}:\dfrac{8^2}{4^4}\right)^{2009}\)
\(\dfrac{7}{8}.\left(\dfrac{2}{12}+\dfrac{4}{10}\right)\)
\(\dfrac{3}{2}-\dfrac{5}{6}:\left(\dfrac{1}{2}\right)^2+\sqrt{4}\)
Câu 2: Tim x
\(2.x-\dfrac{5}{4}=\dfrac{20}{15}\)
\(\left(x+\dfrac{1}{3}\right)^3=\left(\dfrac{-1}{8}\right)\)
Bài 4 : Tìm x,y biết :
a)3dfrac{1}{4}-dfrac{1}{4}left|x-0,25right|dfrac{1}{4}
b)left|x-3right|-4
c)left|x-dfrac{1}{2}right|+10
d)left|x-dfrac{1}{5}right|left|dfrac{3}{4}-2xright|
e)left|x+2right|30
f)left|2x-1right|-left|x+2right|0
g)left|x+2right|+left|y-1right|0
h)left|2xright|+left|y+dfrac{1}{4}right|0
Đọc tiếp
Bài 4 : Tìm x,y biết :
a)\(3\dfrac{1}{4}-\dfrac{1}{4}\left|x-0,25\right|=\dfrac{1}{4}\)
b)\(\left|x-3\right|=-4\)
c)\(\left|x-\dfrac{1}{2}\right|+1=0\)
d)\(\left|x-\dfrac{1}{5}\right|=\left|\dfrac{3}{4}-2x\right|\)
e)\(\left|x+2\right|3=0\)
f)\(\left|2x-1\right|-\left|x+2\right|=0\)
g)\(\left|x+2\right|+\left|y-1\right|=0\)
h)\(\left|2x\right|+\left|y+\dfrac{1}{4}\right|=0\)
1. Tìm x:
a) \(\left|3x-5\right|-\left|x+2\right|=0\)
b)\(\left|3x-5\right|+\left|x+2\right|=0\)
c)\(\left|3x-5\right|-x+2=0\)
d)\(\dfrac{11}{2}\le\left|x\right|< \dfrac{17}{2}\)
e)\(\dfrac{11}{2}\le\left|x+2\right|\le\dfrac{17}{2}\)
\(\left|x-1,5\right|+\left|2,5-x\right|=0\)
Tìm x,y biết :
a ) 1-left|x-dfrac{1}{4}right|0,25
b)left|x+0,5right|+2,250,5
c)left|2x+5right|left|1-xright|
d)left|x-2right|-0,5dfrac{1}{4}
e)left|dfrac{3}{2}-xright|+22
f)left|x-3right|+54
g)left|dfrac{1}{2}x-3right|+left|y+0,5right|0
h)left|x+4right|+left|1-2yright|0
giup mình voi mình sap đi học rồi
Đọc tiếp
Tìm x,y biết :
a ) \(1-\left|x-\dfrac{1}{4}\right|=0,25\)
b)\(\left|x+0,5\right|+2,25=0,5\)
c)\(\left|2x+5\right|=\left|1-x\right|\)
d)\(\left|x-2\right|-0,5=\dfrac{1}{4}\)
e)\(\left|\dfrac{3}{2}-x\right|+2=2\)
f)\(\left|x-3\right|+5=4\)
g)\(\left|\dfrac{1}{2}x-3\right|+\left|y+0,5\right|=0\)
h)\(\left|x+4\right|+\left|1-2y\right|=0\)
giup mình voi mình sap đi học rồi
a) left|3cdot x-1right|left|5-2cdot xright|
b) left|x+2right|-left|x+7right|0
c) left|2cdot x-1right|+x2
d) left|x+1right|+left|2cdot y-1right|0
giúp mk nha 4h đi học rùi mk tick cho
Đọc tiếp
a) \(\left|3\cdot x-1\right|=\left|5-2\cdot x\right|\)
b) \(\left|x+2\right|-\left|x+7\right|=0\)
c) \(\left|2\cdot x-1\right|+x=2\)
d) \(\left|x+1\right|+\left|2\cdot y-1\right|=0\)
giúp mk nha 4h đi học rùi mk
tick cho
Tìm \(x\in\mathbb{Q}\), biết :
a) \(\left|2,5-x\right|=1,3\)
b) \(1,6-\left|x-0,2\right|=0\)
c) \(\left|x-1,5\right|+\left|2,5-x\right|=0\)
Tìm x biết
a.\(2009-\left|x-2009\right|=x\)
b.\(\left(2x+1\right)^{2008}+\left(y-\dfrac{2}{5}\right)^{2008}+\left|x+y-z\right|=0\)
28 tháng 9 2017 lúc 19:15
tim x
a,\(\left|2x-1,6\right|-2,3=1,4\)
b\(5,4-\left|3x-1,2\right|=5,5\)
c,\(\left|x+1,3\right|+\left|x+2,4\right|=4x\)
d, \(\left|x-1,2\right|+\left|2,5-x\right|=0\)
giup minh nhe minh dang can gap