`=> x - 7 = 45`.
`=> x = 45 + 7`
`=> x = 52`.
Vậy `x = 52`
\(45-\left[x-7\right]=0\)
x - 7 = 45 - 0
x - 7 = 45
x = 45 + 7
x = 52
\(45-(x-7)=0\)
\(x-7=45-0\)
\(x-7=45\)
\(x=45+7\)
\(x=52\)
\(63-(x+2)=14\)
\(x+2=63-14\)
\(x+2= 49\)
\(x=49-2\)
\(x=47\)
\(----------\)
\((x-2):32=60\)
\(x-2=60x32\)
\(x-2= 1920\)
\(x=1920+2\)
\(x=1922\)
\(-----------\)
\(2x(x-3)-13=23\)
\(2x(x-3)=23+13\)
\(2x(x-3)=36\)
\(x-3=36:2\)
\(x-3=18\)
\(x=18+3\)
\(x=21\)
45-[x-7]=0
\(x-7=0+45\\ x-7=45\\ x=45+7\\ x=52\)
63-[x+2]=14
\(x+2=63-14\\ x+2=49\\ x=49-2\\ x=47\)
[x-2]:32=60
\(x-2=60\cdot32\\ x-2=1920\\ x=1920+2\\ x=1922\)
2*[x-3]-13=23
\(2\left(x-3\right)=23+13\\ 2\left(x-3\right)=36\\ x-3=36:2\\ x-3=18\\ x=18+3\\ x=21\)
