Tìm $x$, biết: Nhanh giúp e

\begin{array}{c}\color{#003366}{-Re}\color{#005A9C}{dD}\color{#007ACC}{e}\color{#00AEEF}{vi}\color{#00CFFF}{ls}\color{#A4D3EE}{-}\color{#D3D3D3}{}\color{#E0E0E0}{}\end{array}

`c)`

`x-56:4=16`

`x-14=16`

`x=16+14`

`x=30`

`d)`

`101+(36-4x)=105`

`101+36-4x=105`

`137-4x=105`

`4x=137-105`

`4x=32`

`x=32:4`

`x=8`

`e)`

`2(x-51)=2*2^3+20=2*8+20=16+20=36`

`x-51=36:2=18`

`x=18+51`

`x=69`

`f)`

`10-(x-3):2=7^2-1^10=49-1`

`10-(x-3):2=48`

`(x-3):2=10-48`

`(x-3):2=-38`

`x-3=-76`

`x=-76+3`

`x=-73`

`g)`

`2x-49=5*3^2=5*9=45`

`2x=45+49=94`

`x=94:2=47`

`h)`

`[(8x-12):4]*3^3=3^6`

`[(8x-12):4]*27=729`

`(8x-12):4=729:27`

`(8x-12):4=27`

`8x-12=27*4`

`8x-12=108`

`8x=120`

`x=120:8`

`x=15`

`i)`

`5^(2x-3)-2*5^2=5^2*3=25*3=75`

`5^(2x-3)=75+2*25=75+50=125`

`5^(2x+3)=5^3`

`2x-3=3`

`2x=3+2`

`2x=6`

`x=6/2`

`x=3`