Question

2/2/3:x=1/7/9:0,02 

-3/5:3/14+0,5.x=12

2^2x+1=2^3.2^4

|3-x|+1/2=5

 

Answer 1

học tốt

Answer 2

Giup minh voi

Answer 3

\(2\frac{2}{3}:x=1\frac{8}{9}:0,02\)

\(\frac{8}{3}:x=\frac{17}{9}:\frac{1}{50}\)

\(\frac{8}{3}:x=\frac{17}{9}.50\)

\(\frac{8}{3}:x=\frac{850}{9}\)

      \(x=\frac{8}{3}:\frac{850}{9}\)

      \(x=\frac{8}{3}x\frac{9}{850}\)

      \(x=\frac{12}{425}\)

Vậy \(x=\frac{12}{425}\)

\(-\frac{3}{5}:\frac{3}{14}+0,5.x=12\)

\(-\frac{3}{5}:\frac{3}{14}+\frac{1}{2}.x=12\)\(-\frac{3}{5}x\frac{14}{3}+\frac{1}{2}.x=12\)\(-\frac{14}{5}+\frac{1}{2}.x=12\)\(\frac{1}{2}.x=12-\left(-\frac{14}{5}\right)\)\(\frac{1}{2}.x=12+\frac{14}{5}\)\(\frac{1}{2}.x=\frac{60}{5}+\frac{14}{5}\)\(\frac{1}{2}.x=\frac{74}{5}\)       \(x=\frac{74}{5}:\frac{1}{2}\)      \(x=\frac{74}{5}x2\)       \(x=\frac{158}{5}\)   Vậy \(x=\frac{158}{5}\)