`o`.`460` + `85` x `4` = $\frac{X+175}{5}$` + `30
`460` + `340` = `$\frac{X+175}{5}$` + `30`
`800` = `$\frac{X+175}{5}$` + `30`
⇒ $\frac{X+`175`}{`5`}$ = `800` + `30` = `830`
⇒ `X` + `175` = `830` x `5`
⇒ ` X` = `3.975`
`p`. (`$\frac{4}{5}$` : `$\frac{6}{5}$` + `$\frac{1}{5}$` : `$\frac{1}{x}$` ) x `30` - `26` = `54`
( `$\frac{2}{3}$` + `$\frac{1}{5}$` : `$\frac{1}{x}$`) x 30 = `54` + `26` = `80`
`$\frac{2}{3}$` + `$\frac{1}{5}$` : `$\frac{1}{x}$` = `$\frac{8}{3}$`
`$\frac{1}{5}$` : `$\frac{1}{x}$` = `$\frac{8}{3}$` - `$\frac{2}{3}$` = `2`
`$\frac{1}{x}$` = `2` : `$\frac{1}{5}$` = `10`
⇒ `x` = `$\frac{1}{10}$`
`q`.`1` - ( `$\frac{4}{9}$` - `y` + `$\frac{7}{18}$`) : `$\frac{3}{4}$` = `0
`1` - ( `$\frac{4}{9}$` - `y` + `$\frac{7}{18}$`) = `0
`$\frac{4}{9}$` - `y` + `$\frac{7}{18}$` = `1`
`$\frac{4}{9}$` - `y` = `1` - `$\frac{7}{18}$` = `$\frac{11}{18}$`
`y` = $\frac{4}{9}$` - `$\frac{11}{18}$
`y` = $\frac{-1}{6}$
`XIN` `HAY` `NHẤT`
