=> 34.1,61=23.x
=> 54,74=23.x
=> x=54,74:23
=> x=2,38
Ta có :\(x=\frac{34\times1,61}{23}=2,38\)
Vậy x = 2,38
Tim x biet
\(\left(\frac{1}{1.2.3}+\frac{1}{2.3.4}+...+\frac{1}{8.9.10}\right).x=\frac{23}{45}\)
Tim x biet
c) \(\frac{7}{9}:\left(2+\frac{3}{4}x\right)+\frac{5}{9}=\frac{23}{27}\)
d) \(|x-\frac{1}{3}|-\frac{3}{4}=\frac{5}{3}\)
\(\left(\frac{11}{12}+\frac{11}{12\times13}+\frac{11}{23\times24}+...+\frac{11}{89\times100}\right)+x=\frac{5}{3}\)
Tim x biet
ai guips tui với
Tim x biet
a)\(\frac{8}{23}.\frac{46}{24}-x=\frac{1}{3}\)
b) \(\frac{10}{12}:x=\frac{28}{9}.\frac{3}{56}\)
c) \(\frac{x-12}{4}=\frac{1}{2}\)
1tính nhanh
35 . 34 +35 . 86 + 65 . 75 + 65 . 45
2 tìm x ,nguyen biết : \(\left(\frac{1}{1.2.3}+\frac{1}{2.3.4}+.....+\frac{1}{8.9.10}\right).x=\frac{23}{45}\)
2 . (x + 2 ) + ( x + 2 ) . 2y =12
\(\frac{34}{245}\) x \(\frac{323}{23}\)+ 467 = bao nhieu
\(50-2^3=\frac{x-5}{x}-23\)
Tính nhanh
a, \(\frac{7}{13}\)x\(\frac{7}{15}\)-\(\frac{5}{12}\)x\(\frac{21}{39}\)+\(\frac{49}{91}\)x\(\frac{8}{15}\)3
b,(\(\frac{12}{199}\)+\(\frac{23}{200}\)-\(\frac{34}{201}\)) x (\(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\))
Tìm GTNN
a.\(A=\left|\frac{x}{5}+\frac{23}{2}\right|+\left|y-\frac{14}{3}\right|+2019\)
b. \(B=\left(x-\frac{5}{4}\right)^{20}+\left(y+\frac{4}{3}\right)^{30}-11\)
AI LÀM NHANH TỚ TIM
