\(\left(x+175\right):5+30=69\\ \left(x+175\right):5=39\\x+175=195\\ x=20 \)
\(( x + 175 ) : 5 + 30 = 69\)
\(( x + 175 ) : 5 = 69- 30\)
\(( x + 175 ) : 5 = 39\)
\(( x + 175 ) = 39x 5\)
\(x + 175 = 195\)
\(x=195-175=20\)
( x + 175 ) : 5 = 69 - 30
( x + 175 ) : 5 = 39
( x + 175 ) = 39 X 5
( x + 175 ) = 195
x = 195 -175
x = 20
`(x + 175):5+30=69`
`(x+175):5 = 69 - 30`
`(x+175):5 =39`
`x + 175 = 39 xx 5`
`x+175 =195`
`x=195 - 175`
`x=20`
(x + 175) : 5 + 30 = 69
(x + 175) : 5 = 69 - 30
(x + 175) : 5 = 39
x + 175 = 39 x 5
x + 175 = 195
x = 195 - 175
x = 20
vậy x = 20