\(2x-\frac{5}{4}=\left(3-\frac{1}{2}\right)\left(x-\frac{1}{3}\right)\)
\(\Leftrightarrow2x-\frac{5}{4}=\frac{5}{2}\left(x-\frac{1}{3}\right)\)
\(\Leftrightarrow2x-\frac{5}{4}=\frac{5x}{2}-\frac{5}{6}\)
\(\Leftrightarrow-\frac{x}{2}-\frac{5}{12}=0\)
\(\Leftrightarrow-\frac{x}{2}=\frac{5}{12}\Rightarrow-12x=10\)
\(\Rightarrow x=-\frac{5}{6}\)
Tìm x biết:
a) \(\left(x+\frac{1}{2}\right).\left(x-\frac{3}{4}\right)=0\)
b) \(\left(\frac{1}{2}x-3\right).\left(\frac{2}{3}x+\frac{1}{2}\right)=0\)
c) \(\frac{2}{3}-\frac{1}{3}.\left(x-\frac{3}{2}\right)-\frac{1}{2}\left(2x+1\right)=5\)
d) \(4x-\left(x+\frac{1}{2}\right)=2x-\left(\frac{1}{2}-5\right)\)
MONG CÁC BN GIÚP ĐỠ MK BÀI NÀY , MK ĐANG CẦN RẤT GẤP 
GIẢI CHI TIẾT RA GIÚP MK VS NHÉ!!!!MK RẤT CẢM ƠN
Bài 1: Tìm x :
a ) \(\left|x+\frac{1}{2}\right|=\left|2x+3\right|\)
b) \(\left|x+\frac{1}{5}\right|+\left|x+\frac{2}{5}\right|+\left|x+1\frac{2}{5}\right|=4x\)
giải giúp mk với mai mk kiểm tra rồi
Giúp mk vs đg cần gấp nha cảm ơn mấy bạn nhiều lắm !!!
\(\left(\frac{1}{2}\right)^5.x=\left(\frac{1}{2}\right)^7\)
\(\left(\frac{3}{7}\right)^2.x=\left(\frac{9}{21}\right)^2\)
Bài tìm x biết :
2x=2
3x=34
7x=77
(-3)x=(-3)5
(-5)x=(-5)4
2x=4
2x=8
2x=16
3x+1=32
5x-1=5
6x+4=610
52x-7=511
(-2)4x+2=64
\(\left(\frac{1}{2}\right)^x=\left(\frac{1}{2}\right)^5\)
\(\left(\frac{5}{6}\right)^{2x}=\left(\frac{5}{6}\right)^5\)
\(\left(\frac{3}{4}\right)^{2x-1}=\left(\frac{3}{4}\right)^{5x-4}\)
\(\left(-\frac{1}{10}\right)^x=\frac{1}{100}\)
\(\left(-\frac{3}{2}\right)^x=\frac{9}{4}\)
\(\left(-\frac{3}{5}\right)^{2x}=\frac{9}{25}\)
\(\left(-\frac{2}{3}\right)^x=-\frac{8}{27}\)
\(a,\left(-3\right)^{x+3}=-\frac{1}{27}\)
\(b,\left(-6\right)^{2x+2}=\frac{1}{36}\)
\(c,\left(-3\right)^{x+5}=\frac{1}{81}\)
\(d,\left(\frac{1}{9}^x\right)=\left(\frac{1}{27}\right)^6\)
\(e,\left(\frac{4}{9}\right)^x=\left(\frac{8}{27}\right)^6\)
\(f,5^{x+4}-3.5^{x+3}=2.5^{11}\)
\(r,4.3^{x-1}+2.3^{x+2}=4.3^6+2.3^9\)
\(h,\left(\frac{1}{2}-\frac{1}{3}\right).6x+6^{x+2}=6^{10}+6^7\)
nhờ mấy bn giúp mk tối mình nộp rồi
Tìm x:
a)\(3x-\left|2x+1\right|=2\)
b)\(\left|3x-5\right|+\left|2x+3\right|=7\)
c)\(\left|x-\frac{1}{3}\right|+\frac{4}{5}=\left|\left(-3,2\right)+\frac{2}{5}\right|\)
Các bn làm đc câu nào thì làm nha . Help me
Các bn giúp mk vs,tí nữa là phải đi hx rùi.1h15' mk quay lại.Nhanh nha
Tìm n:
a)\(\left(\frac{1}{5}\right)^{3n-1}=\frac{1}{25}\)
b)\(\left(\frac{4}{7}\right)^{n+2}=\frac{7}{4}\)
c)\(\left(\frac{2}{3}\right)^{-n+1}=\frac{3^3}{2^3}\)
d) \(\left(0,7\right)^{3n+1}=10^3:7^3\)
Tìm x thuộc Q
a) 3-4.\(\left|5-6x\right|\) =7
b)\(\left|x+2\right|\) + \(\left|x+\frac{3}{5}\right|\) +\(\left|x+\frac{1}{2}\right|\) =4x
c)\(\left|x+\frac{1}{101}\right|\) +\(\left|x+\frac{2}{101}\right|\) +\(\left|x+\frac{3}{101}\right|\) +...+\(\left|x+\frac{100}{101}\right|\) =101x
lm giúp mk với, mk cần gấp
Tìm x,y biết:
a) \(x^2+\left(y-\frac{1}{10}\right)^4=0\)
b) \(\left(\frac{1}{2}x-5\right)^{20}+\left(y^2-\frac{1}{4}\right)^{10}=0\)
Nhanh lên ai giúp mk zới!! CTV ơi, help me!!!!
tìm x biết
a. \(\frac{1}{4}.\left\{3-\frac{1}{2}\left[1+\frac{1}{2}\left(\sqrt{2x+1}-\frac{1}{2}\right)\right]\right\}=2\)
b. \(\sqrt{1+2+3+...+\left(x-1\right)+x+\left(x-1\right)+...+3+2+1}=2010\)
giúp mình nha mình đang cần gấp
