Mình chỉ giải câu a) thôi nhé. 4/5-1/3.x=3/2 1/3.x=4/5-3/2 1/3.x=-7/10 x=-7/10:1/3 x=-21/10
Tôi ko viết được phân số nên tôi viết /
tìm x , biết
1, 2\(\left(\frac{3}{4}-5x\right)=\frac{4}{5}-3x\)
2, \(\frac{3}{2}-4\left(\frac{1}{4}-x\right)=\frac{2}{3}-7x\)
3, 3\(\left(\frac{1}{2}-x\right)+\frac{1}{3}=\frac{7}{6}-x\)
4, a\(\left(\frac{1}{2}-x\right)-5\left(x-\frac{3}{10}\right)=\frac{7}{4}\)
Tìm x, biết
1, \(-\frac{3}{2}\left(\frac{4}{5}-\frac{2}{3}\right)+x=4\left(x-\frac{2}{3}\right)\)
2, \(2\left(\frac{3}{2}-x\right)-\frac{1}{3}=7x-\frac{1}{4}\)
3, \(\frac{1}{5}\left(\frac{-3}{5}10\right)+5x=x-\frac{2}{3}\)
4, \(-\frac{3}{2}\left(5-\frac{1}{6}\right)+4\left(x-\frac{1}{2}\right)=1\)
Tìm x, biết
1) \(\frac{x-1}{x-5}=\frac{6}{7}\) 2) \(\frac{x-1}{3}=\frac{x+3}{5}\)
3) \(\frac{3}{7}=\frac{2x+1}{3x+5}\) 4) \(\frac{2x+3}{3x+1}=\frac{3}{4}\)
5) \(\frac{2x+3}{6}=\frac{7x-3}{15}\)
6) \(\frac{6x-5}{-7}=\frac{5x-3}{-5}\)
Tìm x:\(a,\frac{6x-5}{-7}=\frac{5x-3}{-5}\\ b,\frac{12-7x}{-13}=\frac{4-3x}{-5}\\ c,\frac{2x+4}{7}=\frac{4x-2}{15}\)
1 Tìm x:
( \(3x-2\frac{1}{3}\)):( \(3\frac{1}{4}-5\frac{2}{3}+1\frac{4}{5}\)) = \(2-1\frac{1}{3}x\)
2. Tìm x:
\(\frac{x+\frac{2\left(3-x\right)}{5}}{14}-\frac{5x-4\left(x-1\right)}{24}=\frac{7x+2+\frac{9-3x}{5}}{12}+\frac{2}{3}\)
3. Tìm x:
\(\left(1+3x\right)^2-3x\left(2x+6\right)=\left(4-3x\right)\left(x+3\right)-\left(2x-1\right)^2\)
Bài 1: Tìm x,y biết :
a) \(\frac{2x+3}{5x+2}=\frac{4x+5}{10x+2}\)
b)\(\frac{3x-1}{40-5x}=\frac{25-3x}{5x-34}\)
Bài 2: Timd x,y,z biết:
a)\(5x=-10y=6zvàxyz=-30000\)
b)\(\frac{x-y}{3}=\frac{x+y}{13}=\frac{xy}{200}\)
Tìm x, biết:
a, 2x-10-[3x-14-(4-5x)-2x] = 2
b,\(\left(\frac{1}{4}x-1\right)+\left(\frac{5}{6}x-2\right)-\left(\frac{3}{8}x+1\right)=4,5\)
tìm x biết
a/\(\frac{3x}{7}=\frac{5x-1}{2}\)
b/\(\frac{2-5x}{3}=\frac{4+x}{5}\)
Tìm x biết:
a, \(\frac{2x+3}{5x+2}=\frac{4x+5}{10x+2}\)
b, \(\frac{3x-1}{40-5x}=\frac{25-3x}{5x-34}\)
