\(25\cdot\left(x-3,4\right)-5,67=7,23\)
\(25\cdot\left(x-3,4\right)=7,23+5,67\)
\(25\cdot\left(x-3,4\right)=12,9\)
\(x-3,4=12,9\text{ : }25\)
\(x-3,4=0,516\)
\(x=0,516+3,4\)
\(x=3,916\)
25(x - 3,4) - 5,67 = 7,23
=> 25(x - 3,4) = 7,23 + 5,67
=> 25(x - 3,4) = 12,9
=> x - 3,4 = 12,9 : 25
=> x - 3,4 = 0,516
=> x = 0,516 + 3,4
=> x = 3,916
Vậy x = 3,916