117 - 2 x ( x - 25 ) = 89
2 x ( x - 25 ) = 89 + 117
2 x ( x - 25 ) = 206
x - 25 = 206 : 2
x - 25 = 103
x = 105 + 25
x = 130
Học tốt nhé!!! Arigatou
117 - 2 x ( X - 25 ) = 89
2 x ( X - 25 ) = 117- 89
2 x ( X - 25 ) = 28
X - 25 = 28 : 2
X - 25 = 14
X = 14 + 25
X = 29
Vậy X = 29
\(117-2\times\left(x-25\right)=89\)
\(2\times\left(x-25\right)=117-89\)
\(2\times\left(x-25\right)=28\)
\(x-25=28\div2\)
\(x-25=14\)
\(x=14+25\)
\(x=39\)
~ HOK TỐT ~
117 - 2 x ( X - 25 ) = 89
2 x ( X - 25 ) = 117 - 89
2 x ( X - 25 ) = 28
X - 25 = 28 : 2
X - 25 = 14
X = 14 + 25 = 39
117 - 2 x [ X - 25 ] = 89
2 x( X - 25) = 117 - 89
2 x (X - 25) = 28
( X - 25) = 28: 2
X - 25 = 14
X = 14+25
X = 39
Vậy ...................................................
Hok tốt
117 - 2 x ( x - 25 ) = 89
2 x ( x - 25 ) = 89 + 117
2 x ( x - 25 ) = 206
x - 25 = 206 : 2
x - 25 = 103
x = 105 + 25
x = 130
