\(\left[4.\left(2x-5\right)+12\right]:2=15\\ \Rightarrow4.\left(2x-5\right)+12=30\\ \Rightarrow4.\left(2x-5\right)=18\\ \Rightarrow2x-5=\dfrac{18}{4}\\ \Rightarrow2x=\dfrac{19}{2}\\ \Rightarrow x=\dfrac{19}{4}.\)
[4.(2.\(x\) -5) + 12]:2 = 15
4.(2\(x\) - 5) + 12 = 30
8\(x\) - 20 = 30 - 12
8\(x\) = 18
8\(x\) = 38
\(x\) = \(\dfrac{19}{4}\)
`[4.(2.x-5)+12]:2=15`
`=> 4.(2.x-5)+12 =15*2`
`=> 4.(2.x-5)+12 =30`
`=> 4.(2.x-5)=30-12`
`=> 4.(2.x-5)= 18`
`=> 2.x-5=18/4`
`=> 2.x=19/2`
`=>x= 19/2 :2`
`=>x=19/4`
\(\left[4\left(2x-5\right)+12\right]:2=15\)
\(4\left(2x-5\right)+12=15\cdot2=30\)
\(4\left(2x-5\right)=30-12=18\)
\(2x-5=18:4=4,5\)
\(2x=4,5+5=9,5\)
\(x=9,5:2=4,75\)
